<?xml version="1.0" encoding="UTF-8"?>
  <!-- PDS4 XML/Schema for Name Space Id:img  Version:1.9.0.0 - Fri Dec 29 21:16:40 PST 2017 -->
  <!-- Generated from the PDS4 Information Model Version 1.9.0.0 - System Build 8a -->
  <!-- *** This PDS4 product schema is an operational deliverable. *** -->
  <!--                                                                           -->
  <!--               Dictionary Stack                                            -->
  <!-- 1.9.0.0 - pds: - Common Dictionary - N/A                                  -->
  <!-- 1.9.0.0 - img: - Imaging - PDS4_IMG_IngestLDD_1900.xml                    -->
  <!--                                                                           -->
  <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
    targetNamespace="http://pds.nasa.gov/pds4/img/v1"
    xmlns:img="http://pds.nasa.gov/pds4/img/v1"
    xmlns:pds="http://pds.nasa.gov/pds4/pds/v1"
    elementFormDefault="qualified"
    attributeFormDefault="unqualified"
    version="1.9.0.0">
 
    <xs:import namespace="http://pds.nasa.gov/pds4/pds/v1" schemaLocation="http://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1900.xsd"/>
 
  <xs:annotation>
    <xs:documentation>
 This dictionary contains high level classes and attributes used in imaging and
    spectrometer products. It also contains classes with attributes used during active mission
    operations. Many of these classes are designed to be extended into local mission dictionaries.
    
    ## CHANGE LOG ##
    1.4.0.0
    - upgraded to v1900 of the IM
    - removed specific Autoexposure algorithm classes and introduced generic Algorithm_Parameter class
    - new/improved definitions for Companding_Parameters, Downsampling_Parameters, Exposure_Parameters
    - removed the following attributes: Data_Correction.data_correction_subtype
    - removed the following classes because they were sufficiently multi-mission:
      - Derived_Product_Parameters
      - Frame_Parameters
      - Product_Identification 
      - Stereo_Product_Parameters
      - Vector_Range_Origin
    - added exposure_type enumeration
    - new flat_field_algorithm attribute
    - changed compression_type to compression_class and compression_mode_name to compression_type
    - added new enumerations for compression_class and compression_type
    - added new Instrument_Device_Currents class
  
    </xs:documentation>
  </xs:annotation>
 
  <xs:element name="Imaging" type="img:Imaging"> </xs:element>

  <xs:complexType name="Algorithm_Parameter">
    <xs:annotation>
      <xs:documentation>The Algorithm_Parameter class provides a name
        and value(s) use for input into the autoexposure
        algorithm.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="name" type="pds:name" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="value" type="pds:value" minOccurs="1" maxOccurs="unbounded"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Autoexposure_Parameters">
    <xs:annotation>
      <xs:documentation>The Autoexposure_Parameters class contains
        attributes used to identify or describe the histogram
        thresholding algorithm and applicable attributes required for
        those algorithms. The input parameters for the algorithm can be
        specified using the Algorithm_Parameter class or via a
        Local_Internal_Reference to a mission-specific parameter
        definition.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="autoexposure_algorithm_name" type="img:autoexposure_algorithm_name" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="Algorithm_Parameter" type="img:Algorithm_Parameter" minOccurs="0" maxOccurs="unbounded"> </xs:element>
      <xs:element ref="pds:Local_Internal_Reference" minOccurs="0" maxOccurs="unbounded"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Bayer_Parameters">
    <xs:annotation>
      <xs:documentation>The Bayer_Parameters class describes whether or
        not an image is bayer encoded, and how the Bayer pattern was
        removed.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="bayer_state" type="img:bayer_state" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="debayer_venue" type="img:debayer_venue" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="debayer_algorithm" type="img:debayer_algorithm" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
    <!-- Begin assert statements for schematron - Enumerated Values -->
    <!-- <xs:assert test="img:bayer_state = ('Bayer Encoded', 'Debayered', 'No Bayer')"/> -->
    <!-- <xs:assert test="img:debayer_venue = ('Ground', 'Onboard')"/> -->
    <!-- <xs:assert test="img:debayer_algorithm = ('Malvar', 'Zhang-Wu')"/> -->
    <!-- End assert statements for schematron - Enumerated Values -->
  </xs:complexType>

  <xs:complexType name="Command_Parameters">
    <xs:annotation>
      <xs:documentation>The Command_Parameters class contains attributes
        used to identify or describe the commands sent to a spacecraft
        to perform one or more actions resulting in the acquisition of
        the current data product.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="description" type="pds:description" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="detector_erase_count" type="img:detector_erase_count" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Exposure_Parameters" type="img:Exposure_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Data_Correction_Parameters" type="img:Data_Correction_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Companding_Parameters">
    <xs:annotation>
      <xs:documentation> The Companding_Parameters class describes
        whether or not data is or has had its bit depth reduced (for
        example conversion from 12 to 8 bits via a lookup table or bit
        scaling), the venue where it occurred (Software or Hardware),
        and the method used to complete the
        companding.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="companding_state" type="img:companding_state" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="companding_venue" type="img:companding_venue" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="companding_method" type="img:companding_method" minOccurs="1" maxOccurs="1"> </xs:element>
    </xs:sequence>
    <!-- Begin assert statements for schematron - Enumerated Values -->
    <!-- <xs:assert test="img:companding_state = ('Companded', 'Expanded', 'None')"/> -->
    <!-- <xs:assert test="img:companding_venue = ('Hardware', 'None', 'Software')"/> -->
    <!-- End assert statements for schematron - Enumerated Values -->
  </xs:complexType>

  <xs:complexType name="Correction_Parameter">
    <xs:annotation>
      <xs:documentation> The Correction_Parameter class specifies
        identifier(s) and value for a data correction parameter
        applicable to the parent class.</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:restriction base="img:List_Index_No_Units_Imaging">
        <xs:sequence>
          <xs:choice minOccurs="1" maxOccurs="3">
            <xs:element name="sequence_number" type="img:sequence_number"> </xs:element>
            <xs:element name="name" type="pds:name"> </xs:element>
            <xs:element name="id" type="img:id"> </xs:element>
          </xs:choice>
          <xs:choice minOccurs="1" maxOccurs="1">
            <xs:element name="value_number" type="img:value_number"> </xs:element>
            <xs:element name="value_string" type="img:value_string"> </xs:element>
        </xs:choice>
        </xs:sequence>
      </xs:restriction>
    </xs:complexContent>
  </xs:complexType>

  <xs:complexType name="Data_Correction">
    <xs:annotation>
      <xs:documentation>The Data_Correction class specifies describes
        details regarding the calibration and/or processing performed on
        the data product. This class can be used to describe various
        data corrections, such as antiblooming, bad pixel replacement,
        blemish protection, dark current correction, or shutter
        correction. This can be specified multiple times in order to
        detail numerous corrections, and should be used to designate
        PDS3-like flag attributes, such as dark_current_correction_flag
        and flat_field_correction_flag. </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="active_flag" type="img:active_flag" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="data_correction_type" type="img:data_correction_type" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="data_correction_venue" type="img:data_correction_venue" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Data_Correction_File" type="img:Data_Correction_File" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Flat_Field_Correction_Parameters" type="img:Flat_Field_Correction_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Radiometric_Correction_Parameters" type="img:Radiometric_Correction_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Shutter_Subtraction_Parameters" type="img:Shutter_Subtraction_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
    <!-- Begin assert statements for schematron - Enumerated Values -->
    <!-- <xs:assert test="img:data_correction_type = ('Antiblooming', 'Bad Pixel', 'Blemish Protection', 'Brightness', 'Dark Current', 'Flat Field', 'Inverse LUT', 'Light Flood', 'Radiometric', 'Responsivity', 'Shutter Subtraction')"/> -->
    <!-- <xs:assert test="img:data_correction_venue = ('Ground', 'Onboard')"/> -->
    <!-- End assert statements for schematron - Enumerated Values -->
  </xs:complexType>

  <xs:complexType name="Data_Correction_File">
    <xs:annotation>
      <xs:documentation> The Data_Correction_File class specifies a file
        containing explicit details regarding the calibration and/or
        processing performed on the data product. The enclosing class
        and surrounding attribute provide the necessary context to
        interpret this file. As a subclass of the
        Data_Correction_Parameters class, this specifies calibration
        applied to the science data as opposed to calibration the
        instrument before launch. As a subclass of the
        Derived_Product_Parameters class, this specifies a file
        describing the post processing of the product after radiometric
        and photometric calibrations.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="description" type="pds:description" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:choice minOccurs="1" maxOccurs="1">
      </xs:choice>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Data_Correction_Parameters">
    <xs:annotation>
      <xs:documentation> The Data_Correction_Parameters class describes
        data processing steps applied to data, either on-board a
        spacecraft or after receipt of the data on the ground, to remove
        artifacts introduced into the data by the instrument. As a child
        of the Command_Parameters class, these attribute values are
        those that were commanded to the spacecraft.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="Data_Correction" type="img:Data_Correction" minOccurs="0" maxOccurs="unbounded"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Downsampling_Parameters">
    <xs:annotation>
      <xs:documentation> The Downsampling_Parameters class describes
        whether or not downsampling occurred, the venue where it
        occurrected (Software or Hardware), the method used to
        downsample, and the pixel averaging dimensions. A downsampled
        image is a smaller version of the image, resulting in reduced
        resolution of the same coverage area</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="downsampling_flag" type="img:downsampling_flag" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="downsampling_venue" nillable="true" type="img:downsampling_venue" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="downsampling_method" type="img:downsampling_method" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Pixel_Averaging_Dimensions" type="img:Pixel_Averaging_Dimensions" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
    <!-- Begin assert statements for schematron - Enumerated Values -->
    <!-- <xs:assert test=")"/> -->
    <!-- <xs:assert test="img:downsampling_venue = ('Both', 'Hardware', 'Software')"/> -->
    <!-- End assert statements for schematron - Enumerated Values -->
  </xs:complexType>

  <xs:complexType name="Exposure_Parameters">
    <xs:annotation>
      <xs:documentation>The Exposure_Parameters class contains
        attributes identifying the image instrument exposure
        configuration and image exposure values. As a child of the
        Image_Product_Information class, these attribute values identify
        the actual exposure values when the image was taken. As a child
        of the Command_Parameters class, these attribute values are
        those that were commanded to the spacecraft at the time the
        image was taken.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="exposure_count" type="img:exposure_count" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="exposure_duration" type="img:exposure_duration" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="exposure_duration_count" type="img:exposure_duration_count" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="exposure_type" type="img:exposure_type" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
    <!-- Begin assert statements for schematron - Enumerated Values -->
    <!-- <xs:assert test="img:exposure_type = ('Auto', 'Manual', 'Test')"/> -->
    <!-- End assert statements for schematron - Enumerated Values -->
  </xs:complexType>

  <xs:complexType name="Filter">
    <xs:annotation>
      <xs:documentation>The Filter class describes the filter associated
        with a particular observation. The filter may be identified by
        name, identifier, number or some combination of
        these.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="filter_name" type="img:filter_name" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="filter_id" type="img:filter_id" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="filter_number" type="img:filter_number" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="bandwidth" type="img:bandwidth" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="center_filter_wavelength" type="img:center_filter_wavelength" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="comment" type="pds:comment" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Bayer_Parameters" type="img:Bayer_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Flat_Field_Correction_Parameters">
    <xs:annotation>
      <xs:documentation> The Flat_Field_Correction_Parameters class
        specifies the onboard flat-field coefficients/parameters used in
        the algorithm to remove the flat field
        signature.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="flat_field_algorithm" type="img:flat_field_algorithm" minOccurs="1" maxOccurs="unbounded"> </xs:element>
      <xs:element name="Correction_Parameter" type="img:Correction_Parameter" minOccurs="1" maxOccurs="unbounded"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Frame_Parameters">
    <xs:annotation>
      <xs:documentation>The Frame_Parameters class contains attributes
        providing information specific to an image frame. A frame
        consists of a sequence of measurements made over a specified
        time interval, and may include measurements from different
        instrument modes.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="frame_id" type="img:frame_id" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="frame_type_name" type="img:frame_type_name" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="interframe_delay" type="img:interframe_delay" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
    <!-- Begin assert statements for schematron - Enumerated Values -->
    <!-- <xs:assert test=")"/> -->
    <!-- <xs:assert test=")"/> -->
    <!-- <xs:assert test=")"/> -->
    <!-- End assert statements for schematron - Enumerated Values -->
  </xs:complexType>

  <xs:complexType name="ICER_Parameters">
    <xs:annotation>
      <xs:documentation> The ICER_Parameters class contains attributes
        describing onboard compression parameters specific to Joint
        Photographic Experts Group (JPEG) image compression. ICER is a
        wavelet-based image compression file format used by the NASA
        Mars Rovers. ICER has both lossy and lossless compression
        modes.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="wavelet_filter" type="img:wavelet_filter" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="icer_quality" type="img:icer_quality" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="decomposition_stages" type="img:decomposition_stages" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="segment_count" type="img:segment_count" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Image_Compression_Segment" type="img:Image_Compression_Segment" minOccurs="0" maxOccurs="unbounded"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Image_Compression_Parameters">
    <xs:annotation>
      <xs:documentation> The Image_Compression_Parameters class contains
        attributes describing onboard compression parameters used for
        data storage and transmission.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="compression_class" type="img:compression_class" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="compression_mode" type="img:compression_mode" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="compression_type" type="img:compression_type" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="compression_rate" type="img:compression_rate" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="compression_ratio" type="img:compression_ratio" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="compression_quality" type="img:compression_quality" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="deferred_flag" type="img:deferred_flag" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="error_pixel_count" type="img:error_pixel_count" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:choice minOccurs="0" maxOccurs="unbounded">
        <xs:element name="ICER_Parameters" type="img:ICER_Parameters"> </xs:element>
        <xs:element name="JPEG_Parameters" type="img:JPEG_Parameters"> </xs:element>
        <xs:element name="JPEG_Progressive_Parameters" type="img:JPEG_Progressive_Parameters"> </xs:element>
        <xs:element name="LOCO_Parameters" type="img:LOCO_Parameters"> </xs:element>
      </xs:choice>
    </xs:sequence>
    <!-- Begin assert statements for schematron - Enumerated Values -->
    <!-- <xs:assert test="img:compression_class = ('Lossless', 'Lossy', 'Uncompressed')"/> -->
    <!-- <xs:assert test="img:compression_type = ('ICER', 'ICT', 'JPEG', 'JPEG Progressive', 'LOCO', 'MSSS Lossless')"/> -->
    <!-- End assert statements for schematron - Enumerated Values -->
  </xs:complexType>

  <xs:complexType name="Image_Compression_Segment">
    <xs:annotation>
      <xs:documentation> The Image_Compression_Segment class provides
        attributes describing each segment into which data was
        partitioned for error containment purposes as part of the
        compression process. </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="segment_number" type="img:segment_number" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="first_line" type="img:first_line" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="first_sample" type="img:first_sample" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="lines" type="img:lines" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="samples" type="img:samples" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="segment_quality" type="img:segment_quality" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="segment_status" type="img:segment_status" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="missing_pixel_count" type="img:missing_pixel_count" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Image_Product_Information">
    <xs:annotation>
      <xs:documentation>The Image_Product_Information class contains
        classes and attributes that describe the image product itself,
        including information about the exposure duration, filters, data
        correction, sampling, frame, sub-frames, and how the product was
        derived.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="Autoexposure_Parameters" type="img:Autoexposure_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Exposure_Parameters" type="img:Exposure_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Data_Correction_Parameters" type="img:Data_Correction_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Filter" type="img:Filter" minOccurs="0" maxOccurs="unbounded"> </xs:element>
      <xs:element name="Sampling_Parameters" type="img:Sampling_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Downsampling_Parameters" type="img:Downsampling_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Frame_Parameters" type="img:Frame_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Subframe_Parameters" type="img:Subframe_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Imaging">
    <xs:annotation>
      <xs:documentation>The Imaging class contains classes and
        attributes describing both the image product itself and the
        imaging instrument. Image product information can include
        exposure duration, filters, data correction, sampling, frame,
        sub-frames, and how the product was derived. For the imaging
        instrument, information can be provided describing the dynamic
        physical or operating characteristics of the imaging
        instrument.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element ref="pds:Local_Internal_Reference" minOccurs="1" maxOccurs="unbounded"> </xs:element>
      <xs:element name="Command_Parameters" type="img:Command_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Image_Product_Information" type="img:Image_Product_Information" minOccurs="0" maxOccurs="unbounded"> </xs:element>
      <xs:element name="Imaging_Instrument_State_Parameters" type="img:Imaging_Instrument_State_Parameters" minOccurs="0" maxOccurs="unbounded"> </xs:element>
      <xs:element name="Image_Compression_Parameters" type="img:Image_Compression_Parameters" minOccurs="0" maxOccurs="unbounded"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Imaging_Instrument_State_Parameters">
    <xs:annotation>
      <xs:documentation>The Imaging_Instrument_State_Parameters class
        contains attributes providing the values of any dynamic physical
        or operating characteristics of the imaging
        instrument.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="analog_offset" type="img:analog_offset" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="azimuth_fov" type="img:azimuth_fov" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="elevation_fov" type="img:elevation_fov" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="detector_first_line" type="img:detector_first_line" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="detector_first_sample" type="img:detector_first_sample" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="detector_lines" type="img:detector_lines" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="detector_to_image_rotation" type="img:detector_to_image_rotation" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="gain_mode_id" type="img:gain_mode_id" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="gain_number" type="img:gain_number" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Instrument_Device_Current" type="img:Instrument_Device_Current" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Instrument_Device_Temperature" type="img:Instrument_Device_Temperature" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Instrument_Device_Voltage" type="img:Instrument_Device_Voltage" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Instrument_Device_Current">
    <xs:annotation>
      <xs:documentation>The Instrument_Device_Current class provides a
        container for the set of current of some point on an instrument
        or other device.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="Instrument_Device_Current_Index" type="img:Instrument_Device_Current_Index" minOccurs="1" maxOccurs="unbounded"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Instrument_Device_Current_Index">
    <xs:annotation>
      <xs:documentation>The Instrument_Device_Current_Index class
        provides the current of some point on an instrument or other
        device.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="device_name" nillable="true" type="img:device_name" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="current_value" nillable="true" type="img:current_value" minOccurs="1" maxOccurs="1"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Instrument_Device_Temperature">
    <xs:annotation>
      <xs:documentation>The Instrument_Device_Temperature class provides
        a container for the set of temperatures of some point on an
        instrument or other device.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="Instrument_Device_Temperature_Index" type="img:Instrument_Device_Temperature_Index" minOccurs="1" maxOccurs="unbounded"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Instrument_Device_Temperature_Index">
    <xs:annotation>
      <xs:documentation>The Instrument_Device_Temperature_Index class
        provides the temperature of some point on an instrument or other
        device.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="device_name" nillable="true" type="img:device_name" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:choice minOccurs="1" maxOccurs="2">
        <xs:element name="raw_count" type="img:raw_count"> </xs:element>
        <xs:element name="temperature_value" type="img:temperature_value"> </xs:element>
    </xs:choice>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Instrument_Device_Voltage">
    <xs:annotation>
      <xs:documentation>The Instrument_Device_Voltage class provides a
        container for the set of voltages of some point on an instrument
        or other device.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="Instrument_Device_Voltage_Index" type="img:Instrument_Device_Voltage_Index" minOccurs="1" maxOccurs="unbounded"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Instrument_Device_Voltage_Index">
    <xs:annotation>
      <xs:documentation>The Instrument_Device_Voltage_Index class
        provides the voltage of some point on an instrument or other
        device.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="device_name" nillable="true" type="img:device_name" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="voltage_value" nillable="true" type="img:voltage_value" minOccurs="1" maxOccurs="1"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="JPEG_Parameters">
    <xs:annotation>
      <xs:documentation> The JPEG_Parameters class contains attributes
        describing onboard compression parameters specific to Joint
        Photographic Experts Group (JPEG) image
        compression.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="color_subsampling_mode" type="img:color_subsampling_mode" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="jpeg_quality" type="img:jpeg_quality" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="jpeg_parameter" type="img:jpeg_parameter" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
    <!-- Begin assert statements for schematron - Enumerated Values -->
    <!-- <xs:assert test="img:color_subsampling_mode = ('4:2:2', '4:4:4', 'Grayscale')"/> -->
    <!-- End assert statements for schematron - Enumerated Values -->
  </xs:complexType>

  <xs:complexType name="JPEG_Progressive_Parameters">
    <xs:annotation>
      <xs:documentation> The JPEG_Progressive_Parameters class contains
        attributes describing an interlaced progressive JPEG format, in
        which data is compressed in multiple passes of progressively
        higher detail. This is ideal for large images that will be
        displayed while downloading over a slow connection, allowing a
        reasonable preview after receiving only a portion of the
        data.</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="img:JPEG_Parameters">
        <xs:sequence>
          <xs:element name="progressive_stage" type="img:progressive_stage" minOccurs="1" maxOccurs="1"> </xs:element>
        </xs:sequence>
        <!-- Begin assert statements for schematron - Enumerated Values -->
        <!-- <xs:assert test="img:color_subsampling_mode = ('4:2:2', '4:4:4', 'Grayscale')"/> -->
        <!-- End assert statements for schematron - Enumerated Values -->
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>

  <xs:complexType name="LOCO_Parameters">
    <xs:annotation>
      <xs:documentation> The LOCO_Parameters class contains attributes
        describing onboard compression parameters specific to Low
        Complexity Lossless Compression (LOCO) image compression, a
        lossless submode of ICER</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="wavelet_filter" type="img:wavelet_filter" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="missing_pixel_count" type="img:missing_pixel_count" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="List_Index_No_Units_Imaging">
    <xs:annotation>
      <xs:documentation>Used when the list values have no units.
        </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:choice minOccurs="1" maxOccurs="3">
        <xs:element name="sequence_number" type="img:sequence_number"> </xs:element>
        <xs:element name="name" type="pds:name"> </xs:element>
        <xs:element name="id" type="img:id"> </xs:element>
      </xs:choice>
      <xs:choice minOccurs="1" maxOccurs="1">
        <xs:element name="value_number" type="img:value_number"> </xs:element>
        <xs:element name="value_string" type="img:value_string"> </xs:element>
    </xs:choice>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Packet_Parameters">
    <xs:annotation>
      <xs:documentation>The Packet_Parameters class contains parameters
        describing the packetized telemetry data.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="creation_sclk" type="img:creation_sclk" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="creation_date_time" type="img:creation_date_time" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="expected_packets" type="img:expected_packets" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="received_packets" type="img:received_packets" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="missing_packet_flag" type="img:missing_packet_flag" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="packet_map_mask" type="img:packet_map_mask" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Pixel_Averaging_Dimensions">
    <xs:annotation>
      <xs:documentation> The Pixel_Averaging class provides the height
        and width, in pixels, of the area over which pixels were
        averaged prior to image compression.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="height_pixels" type="img:height_pixels" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="width_pixels" type="img:width_pixels" minOccurs="1" maxOccurs="1"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Radiometric_Correction_Parameters">
    <xs:annotation>
      <xs:documentation> The Radiometric_Correction_Parameters class is
        a container for the type and details of the radiometric
        calibration performed on the product. </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="radiometric_correction_type_name" type="img:radiometric_correction_type_name" minOccurs="1" maxOccurs="1"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Sampling_Parameters">
    <xs:annotation>
      <xs:documentation> The Sampling_Parameters class contains
        attributes and classes related to the sampling, scaling,
        companding, and compression or reduction in resolution of
        data.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="crosstrack_summing" type="img:crosstrack_summing" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="downtrack_summing" type="img:downtrack_summing" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="sample_bits" type="img:sample_bits" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="sample_bit_mask" type="img:sample_bit_mask" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="sampling_factor" type="img:sampling_factor" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="Companding_Parameters" type="img:Companding_Parameters" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Shutter_Subtraction_Parameters">
    <xs:annotation>
      <xs:documentation> The Shutter_Subtraction_Parameters class
        specifies attributes describing the removal from the image of
        the shutter, or fixed-pattern.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="shutter_subtraction_mode" type="img:shutter_subtraction_mode" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="exposure_duration_threshold_count" type="img:exposure_duration_threshold_count" minOccurs="1" maxOccurs="1"> </xs:element>
    </xs:sequence>
    <!-- Begin assert statements for schematron - Enumerated Values -->
    <!-- <xs:assert test="img:shutter_subtraction_mode = ('Conditional', 'True')"/> -->
    <!-- End assert statements for schematron - Enumerated Values -->
  </xs:complexType>

  <xs:complexType name="Subframe_Parameters">
    <xs:annotation>
      <xs:documentation> The Subframe_Parameters class describes the
        position and other optional characteristics of an image
        subframe, relative to the original image. </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="first_line" type="img:first_line" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="first_sample" type="img:first_sample" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="lines" type="img:lines" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="samples" type="img:samples" minOccurs="1" maxOccurs="1"> </xs:element>
      <xs:element name="name" type="pds:name" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="description" type="pds:description" minOccurs="0" maxOccurs="1"> </xs:element>
      <xs:element name="subframe_type" type="img:subframe_type" minOccurs="0" maxOccurs="1"> </xs:element>
    </xs:sequence>
  </xs:complexType>

    <xs:annotation>
      <xs:documentation>This section contains the simpleTypes that provide more constraints
        than those at the base data type level. The simpleTypes defined here build on the base data
        types. This is another component of the common dictionary and therefore falls within the
        pds namespace.
      </xs:documentation>
    </xs:annotation>

  <xs:simpleType name="active_flag">
    <xs:annotation>
      <xs:documentation> The active_flag attribute indicates whether or
        not the data correction described by the parent class is
        active.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Boolean">
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="analog_offset">
    <xs:annotation>
      <xs:documentation>The analog_offset attribute identifies the
        analog value that is subtracted from the signal prior to the
        analog/digital conversion.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Integer">
     <xs:minInclusive value="-9223372036854775808"/>
     <xs:maxInclusive value="9223372036854775807"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="autoexposure_algorithm_name">
    <xs:annotation>
      <xs:documentation> The autoexposure_algorithm_name attribute
        provides the algorithm used for histograwm thresholding or
        autoexposure of the image. Some example algorithms from past
        missions are, 'Maki 2003' used on MER cameras, MSL ECAMs, M2020
        EECAMs; 'Maurice 2012' used on MSL ChemCam; 'Smith 1997' used on
        Mars Pathfinder Imager.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="azimuth_fov_WO_Units">
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="0.0"/>
     <xs:maxInclusive value="360.0"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="azimuth_fov">
    <xs:annotation>
      <xs:documentation> The azimuth_fov attribute specifies the angular
        measure of the horizontal field of view of an imaged scene.
        </xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="img:azimuth_fov_WO_Units">
        <xs:attribute name="unit" type="pds:Units_of_Angle" use="required" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name="bandwidth_WO_Units">
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="-1.7976931348623157e308"/>
     <xs:maxInclusive value="1.7976931348623157e308"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="bandwidth">
    <xs:annotation>
      <xs:documentation>The bandwidth attribute provides a measure of
        the spectral width of a filter. For a root-mean-square detector
        this is the effective bandwidth of the filter, i.e. the full
        width of an ideal square filter having a flat response over the
        bandwidth and zero response elsewhere. Another common method for
        measuring bandwidth is Full Width at Half Maximum, which is the
        width of a "bump" on a curve or function. It is given by the
        distance between points on the curve at which the function
        reaches half of its maximum value.</xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="img:bandwidth_WO_Units">
        <xs:attribute name="unit" type="pds:Units_of_Frequency" use="required" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name="bayer_state">
    <xs:annotation>
      <xs:documentation>The bayer_state attribute specifies whether or
        not the data is encoded in a Bayer pattern. Valid values: 'No
        Bayer' - sensor does not support Bayer pattern, or the pattern
        is not relevant, 'Bayer Encoded' - data is Bayer encoded,
        'Debayered' - Bayer pattern was removed.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="center_filter_wavelength_WO_Units">
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="-1.7976931348623157e308"/>
     <xs:maxInclusive value="1.7976931348623157e308"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="center_filter_wavelength">
    <xs:annotation>
      <xs:documentation>The center_filter_wavelength attribute provides
        the wavelength of the center of the passband, or the peak
        transmissivity, for an instrument filter. </xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="img:center_filter_wavelength_WO_Units">
        <xs:attribute name="unit" type="pds:Units_of_Length" use="required" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name="color_subsampling_mode">
    <xs:annotation>
      <xs:documentation> The color_subsampling_mode attribute specifies
        the JPEG color subsampling mode used during compression. Valid
        values: '4:2:2' - 4:2:2 chroma subsampling, which is the typical
        case, '4:4:4' - 4:4:4 chroma sampling, which indicates no
        subsampling, 'Grayscale' - indicates a grayscale
        image</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="companding_method">
    <xs:annotation>
      <xs:documentation>The companding_method attribute specifies how
        data was companded. Generally this will either be via a lookup
        table (such as a square root encoding), or by shifting bits to
        preserve the high order bits and discard the low order bits. The
        value of this keyword is mission specific but there are
        recommended values that should apply across missions when
        possible: NONE - no scaling. LUTn - use the numbered lookup
        table. Lookup tables are defined in the mission SIS. It is
        preferred for "n" to be a number but it could be a name, for
        example LUT_MMM_3 to indicate LUT 3 for the MMM instruments (on
        MSL). MSB_BITn - Shift to make bit "n" the most significant.
        Bits start numbering at 0 so MSB_BIT7 means no shift for a 12->8
        bit companding, while MSB_BIT11 means to shift right 4 bits for
        a 12->8 bit companding. AUTOSHIFT - Data should be shifted to
        preserve the highest value. This value should only appear in a
        command echo; one of the MSB_BITn values should be used in
        downlinked data to specify what the actual shift
        was.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="companding_state">
    <xs:annotation>
      <xs:documentation>The companding_state attribute specifies whether
        the data is or has had its bit depth reduced, for example
        conversion from 12 to 8 bits via a lookup table or bit scaling.
        Valid values: None - values have not been companded. Companded -
        values are currently companded. Expanded - values have been
        companded but are now expanded back to original
        size.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="companding_venue">
    <xs:annotation>
      <xs:documentation>The companding_venue attribute specifies where
        companding or expanding of the data was completed either onboard
        or on the ground. Valid values: 'Hardware' - companding was done
        by hardware, for example inside the camera. 'Software' -
        companding was done by flight software. 'None' - data was not
        companded</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="compression_class">
    <xs:annotation>
      <xs:documentation> The compression_class attribute identifies the
        type of on-board compression used for data storage and
        transmission. Note that the compression_type and
        compression_mode identify the specific compression algorithm
        used (for example, ICER), whereas the compression_class gives a
        simple indicator of the type of compression mode. Valid values:
        'Lossless', 'Lossy', 'Uncompressed'</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="compression_mode">
    <xs:annotation>
      <xs:documentation> The compression_mode attribute identifies the
        method used for on-board compression of data. The value for this
        attributes represents the raw integer value for compression,
        which is then translated to the full name captured by the
        compression_type attribute.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Integer">
     <xs:minInclusive value="-9223372036854775808"/>
     <xs:maxInclusive value="9223372036854775807"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="compression_quality">
    <xs:annotation>
      <xs:documentation> The compression_quality attribute is an
        indication of compression quality, in the range of 0.0 to 1.0.
        Losslessly compressed or uncompressed data have a value of 1.0.
        Other values are assigned in a manner specific to the
        compression mode, but with the property that a higher value
        means better compression. Although the values are not directly
        comparable across compression types, this facilitates comparison
        of compression quality across images independent of compression
        mode.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="1.0"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="compression_rate">
    <xs:annotation>
      <xs:documentation> The compression_rate attribute provides the
        average number of bits needed to represent a pixel for an
        on-board compressed image. </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="1.7976931348623157e308"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="compression_ratio">
    <xs:annotation>
      <xs:documentation> The compression_ratio attribute provides the
        ratio of the size, in bytes, of the original uncompressed data
        object to its compressed form (original size / compressed size).
        </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="0.0"/>
     <xs:maxInclusive value="1.7976931348623157e308"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="compression_type">
    <xs:annotation>
      <xs:documentation> The compression_type attribute identifies the
        type of on-board compression used for data storage and
        transmission. Note: The compression_mode identifies the
        shortened version. Valid Values: 'ICER', 'LOCO', 'JPEG', 'JPEG
        Progressive', 'MSSS Lossless'.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="creation_date_time">
    <xs:annotation>
      <xs:documentation>The creation_date_time attribute specifies the
        time, in standard UTC format, that the data or product was
        created on board a spacecraft. This value is not always
        co-incident with the data acquisition time.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Date_Time_YMD">
  <!-- format="YYYY-MM-DDTHH:MM:SS.SSS(Z)" -->
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="creation_sclk">
    <xs:annotation>
      <xs:documentation>The creation_sclk attribute specifies the value
        of the spacecraft clock at the time the data or product was
        created on board a spacecraft. This value is not always
        co-incident with the data acquisition time.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="crosstrack_summing">
    <xs:annotation>
      <xs:documentation>The crosstrack_summing attribute provides the
        number of detector pixel values in the crosstrack direction that
        have been averaged to produce the final output
        pixel.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="current_value_WO_Units">
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="-1.7976931348623157e308"/>
     <xs:maxInclusive value="1.7976931348623157e308"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="current_value">
    <xs:annotation>
      <xs:documentation>The current_value attribute provides provides
        the current, in the specified units, of an imaging instrument or
        some part of the imaging instrument.</xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="img:current_value_WO_Units">
        <xs:attribute name="unit" type="pds:Units_of_Current" use="required" />
        <xs:attribute name="nilReason" type="pds:nil_reason" use="optional" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name="data_correction_type">
    <xs:annotation>
      <xs:documentation>The data_correction_type attribute specifies the
        type of data correction to be applied using the accompanying
        file or constants. Valid values: 'Antiblooming', 'Bad Pixel',
        'Blemish Protection', 'Brightness', 'Dark Current', 'Flat
        Field', 'Inverse LUT', 'Light Flood', 'Responsivity',
        'Shutter'</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="data_correction_venue">
    <xs:annotation>
      <xs:documentation>The data_correction_venue attribute specifies
        where data correction was performed. Valid values: 'Onboard' -
        data correction was performed onboard the spacecraft. 'Ground' -
        data correction was performed by software on the ground.
        </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="debayer_algorithm">
    <xs:annotation>
      <xs:documentation>The debayer_algorithm specifies the algorithm
        used to remove the Bayer pattern in order to create color. Valid
        values: Malvar, Zhang-Wu</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="debayer_venue">
    <xs:annotation>
      <xs:documentation>The debayer_venue attribute specifies where the
        bayer pattern was removed. Valid values: 'Onboard', 'Ground'.
        Use the debayer_algorithm to specify the algorithm used to
        remove the pattern.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="decomposition_stages">
    <xs:annotation>
      <xs:documentation> The decomposition_stages attribute identifies
        the number of stages of decomposition.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="deferred_flag">
    <xs:annotation>
      <xs:documentation> The deferred_flag attribute specifies whether
        compression was done at the time of image acquisition, or was
        deferred until later (typically at downlink time).
        </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Boolean">
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="detector_erase_count">
    <xs:annotation>
      <xs:documentation>The detector_erase_count specifies the number of
        times a detector has been or will be flushed of data in raw
        counts, dependent on the parent class for the
        attribute.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="detector_first_line">
    <xs:annotation>
      <xs:documentation> The detector_first_line attribute specifies the
        starting row from the hardware, such as a charge-coupled device
        (CCD), that contains data.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Integer">
     <xs:minInclusive value="-9223372036854775808"/>
     <xs:maxInclusive value="9223372036854775807"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="detector_first_sample">
    <xs:annotation>
      <xs:documentation> The detector_first_sample attribute specifies
        the starting column from the hardware, such as a charge-coupled
        device (CCD), that contains data.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Integer">
     <xs:minInclusive value="-9223372036854775808"/>
     <xs:maxInclusive value="9223372036854775807"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="detector_lines">
    <xs:annotation>
      <xs:documentation> The detector_lines attribute specifies the
        number of rows extracted from the hardware, such as a
        charge-coupled device (CCD), that contain
        data.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="detector_to_image_rotation_WO_Units">
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="0.0"/>
     <xs:maxInclusive value="360.0"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="detector_to_image_rotation">
    <xs:annotation>
      <xs:documentation> The detector_to_image_rotation attribute
        specifies the clockwise rotation, in degrees, that was applied
        to an image along its optical path through an instrument, from
        detector to final image orientation. </xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="img:detector_to_image_rotation_WO_Units">
        <xs:attribute name="unit" type="pds:Units_of_Angle" use="required" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:complexType name="device_name">
    <xs:annotation>
      <xs:documentation>The device_name attribute supplies the formal
        name for an imaging instrument, an imaging instrument device, or
        some point on the instrument or device.</xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="pds:ASCII_Short_String_Collapsed">
        <xs:attribute name="nilReason" type="pds:nil_reason" use="optional" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name="downsampling_flag">
    <xs:annotation>
      <xs:documentation>The downsampling_flag attribute specifies
        whether or not downsampling has been applied to the
        image(s).</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Boolean">
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="downsampling_method">
    <xs:annotation>
      <xs:documentation>The downsampling_method attribute specifies the
        pixel resolution downsample method used. This varies by mission,
        but examples from MSL include: 'Mean' - Downsampling done in
        software by calculation of the mean., 'Conditional' - Use
        hardware binning if downsampling (by mean calculation) and
        subframe arguments are consistent.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="downsampling_venue">
    <xs:annotation>
      <xs:documentation>The downsampling_venue attribute specifies where
        downsampling was done onboard. Valid values: 'Hardware' -
        downsampling was done by hardware, for example inside the
        camera. 'Software' - downsampling was done by flight software.
        'Both' - data was not companded.</xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="pds:ASCII_Short_String_Collapsed">
        <xs:attribute name="nilReason" type="pds:nil_reason" use="optional" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name="downtrack_summing">
    <xs:annotation>
      <xs:documentation>The downtrack_summing attribute provides the
        number of detector pixel values in the downtrack direction that
        have been averaged to produce the final output
        pixel.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="elevation_fov_WO_Units">
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="0.0"/>
     <xs:maxInclusive value="360.0"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="elevation_fov">
    <xs:annotation>
      <xs:documentation> The elevation_fov attribute specifies the
        angular measure of the vertical field of view of an imaged
        scene. </xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="img:elevation_fov_WO_Units">
        <xs:attribute name="unit" type="pds:Units_of_Angle" use="required" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name="error_pixel_count">
    <xs:annotation>
      <xs:documentation> The error_pixel_count attribute specifies the
        number of pixels that are outside a valid DN range, after all
        decompression and post decompression processing has been
        completed. </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="expected_packets">
    <xs:annotation>
      <xs:documentation>The expected_packets attribute provides the
        total number of telemetry packets which constitute a complete
        data product, i.e., a data product without missing
        data.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="exposure_count">
    <xs:annotation>
      <xs:documentation>The exposure count attribute provides the number
        of exposures taken during a certain interval, such as the
        duration of one command. For example, this may include the
        number of exposures needed by an autoexpose
        algorithm.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="exposure_duration_WO_Units">
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="1.7976931348623157e308"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="exposure_duration">
    <xs:annotation>
      <xs:documentation>The exposure_duration attribute provides the
        amount of time the instrument sensor was gathering light from
        the scene, such as between opening and closing of a shutter, or
        between flushing and readout of a CCD.</xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="img:exposure_duration_WO_Units">
        <xs:attribute name="unit" type="pds:Units_of_Time" use="required" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name="exposure_duration_count">
    <xs:annotation>
      <xs:documentation>The exposure_duration_count attribute specifies
        the value, in raw counts, for the amount of time the instrument
        sensor was gathering light from the scene, such as between
        opening and closing of a shutter, or between flushing and
        readout of a CCD. This is the raw count either commanded or
        taken directly from telemetry as reported by the spacecraft.
        This attribute is the same as the exposure_duration but in DN
        counts versus time, and the translation of
        exposure_duration_count to exposure_duration will differ by
        mission. The attribute can be specified in the context of both
        Imaging_Instrument_State_Parameters (actual value) and
        Command_Parameters (commanded value). Both commanded and actual
        because it's possible for the actual to not match the commanded.
        For example the exposure might fault out early, or there might
        be a deadband (for example, pointing backlash) where changes in
        the input do not actually affect the output.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="exposure_duration_threshold_count">
    <xs:annotation>
      <xs:documentation>The exposure_duration_threshold specifies the
        exposure time threshold in raw counts, when
        shutter_subtraction_mode = 'Conditional'.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="-1.7976931348623157e308"/>
     <xs:maxInclusive value="1.7976931348623157e308"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="exposure_type">
    <xs:annotation>
      <xs:documentation>The exposure_type attribute indicates the
        exposure setting on a camera. Valid values: 'Manual' - manual
        exposure setting, 'Auto' - autoexposure is applied by the
        camera, 'Test' - test exposure setting telling the camera to
        return a fixed-pattern test image.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="filter_id">
    <xs:annotation>
      <xs:documentation> The filter_id attribute provides a short string
        identifier for an instrument filter through which an image or
        measurement was acquired or which is associated with a given
        instrument mode. </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="16"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="filter_name">
    <xs:annotation>
      <xs:documentation>The filter_name attribute provides the name,
        described in the mission documentation, of the instrument filter
        through which an image or measurement was acquired or which is
        associated with a given instrument mode.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="filter_number">
    <xs:annotation>
      <xs:documentation>The filter_number attribute provides the numeric
        identifier of an instrument filter through which an image or
        measurement was acquired or which is associated with a given
        instrument mode.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="first_line">
    <xs:annotation>
      <xs:documentation>The first_line attribute indicates the line
        within a source image that corresponds to the first line in a
        sub-image.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="first_sample">
    <xs:annotation>
      <xs:documentation> The first_sample attribute indicates the sample
        within a source image that corresponds to the first sample in a
        sub-image. </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="flat_field_algorithm">
    <xs:annotation>
      <xs:documentation>The flat_field_algorithm specifies the algorithm
        used to remove the flat field signature.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="frame_id">
    <xs:annotation>
      <xs:documentation> The frame_id attribute specifies an
        identification for a particular instrument measurement frame. A
        frame consists of a sequence of measurements made over a
        specified time interval, and may include measurements from
        different instrument modes. These sequences repeat from cycle to
        cycle and sometimes within a cycle.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="frame_type_name">
    <xs:annotation>
      <xs:documentation> The frame_type_name attribute specifies whether
        the image was commanded as part of a stereo pair or as a single
        left or right monoscopic image. If frame_type = 'Stereo', a left
        and a right image should be present.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="gain_mode_id">
    <xs:annotation>
      <xs:documentation>The gain_mode_id attribute identifies the gain
        state of an instrument. Gain is a constant value which is
        multiplied with an instrument's output signal to increase or
        decrease the level of that output. These modes may vary by
        mission so the permissible values should be set by the mission
        dictionaries.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="gain_number">
    <xs:annotation>
      <xs:documentation>The gain_number attribute specifies the gain
        value used in the analog to digital conversion. The gain value
        is a multiplicative factor used in the analog to digital
        conversion.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Integer">
     <xs:minInclusive value="-9223372036854775808"/>
     <xs:maxInclusive value="9223372036854775807"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="height_pixels_WO_Units">
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="height_pixels">
    <xs:annotation>
      <xs:documentation>The height_pixels attribute provides the
        vertical dimension, in pixels.</xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="img:height_pixels_WO_Units">
        <xs:attribute name="unit" type="pds:Units_of_Misc" use="required" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name="icer_quality">
    <xs:annotation>
      <xs:documentation> The icer_quality attribute is a ICER specific
        variable for on-board ICER data compression.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="18"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="id">
    <xs:annotation>
      <xs:documentation>The id attribute supplies a short name
        (identifier) for the associated value in a group of related
        values. </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="interframe_delay_WO_Units">
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="1.7976931348623157e308"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="interframe_delay">
    <xs:annotation>
      <xs:documentation> The interframe_delay attribute provides the
        time between successive frames of an image, in
        seconds.</xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="img:interframe_delay_WO_Units">
        <xs:attribute name="unit" type="pds:Units_of_Time" use="required" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name="jpeg_parameter">
    <xs:annotation>
      <xs:documentation> The jpeg_parameter attribute is a JPEG specific
        variable which specifies on-board compression determination by
        image quality or by compression factor, based on a selected
        on-board compression mode. </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Integer">
     <xs:minInclusive value="-9223372036854775808"/>
     <xs:maxInclusive value="9223372036854775807"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="jpeg_quality">
    <xs:annotation>
      <xs:documentation> The jpeg_quality attribute is a JPEG specific
        variable which identifies the resultant or targeted image
        quality index for on-board data compression.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="100"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="lines">
    <xs:annotation>
      <xs:documentation>The lines attribute indicates the total number
        of data instances along the vertical axis of an image or
        sub-image.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="missing_packet_flag">
    <xs:annotation>
      <xs:documentation>The missing_packet_flag attribute indicates
        whether or not there were telemetry packets that were expected
        but not received.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Boolean">
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="missing_pixel_count">
    <xs:annotation>
      <xs:documentation> The missing_pixel_count attribute identifies
        the total number of missing pixels defined by the image or image
        segment.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="packet_map_mask">
    <xs:annotation>
      <xs:documentation>The packet_map_mask attribute is a binary or
        hexadecimal number identifying which of a data file's expected
        packets were actually received. The digits correspond
        positionally with the relative packet numbers of the data file.
        The bits are to be read left to right; i.e., the first
        (left-most) digit of the number corresponds to the first packet
        of the data file. A bit value of 1 indicates that the packet was
        received; a value of 0 indicates that it was not
        received.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Numeric_Base16">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="progressive_stage">
    <xs:annotation>
      <xs:documentation> The progressive_stage attribute specifies
        TBD</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="radiometric_correction_type_name">
    <xs:annotation>
      <xs:documentation>The radiometric_correction_type_name identifies
        the method used for radiometric correction.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="raw_count">
    <xs:annotation>
      <xs:documentation> The raw_count attribute provides the value of
        some parameter measured by a spacecraft or instrument sensor in
        the raw units reported by that sensor. A separate attribute
        should be included alongside the raw_count that translates this
        value into the appropriate engineering units. i.e.
        temperature_value in degrees C or voltage_value in
        Volts</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="received_packets">
    <xs:annotation>
      <xs:documentation>The received_packets attribute provides the
        total number of telemetry packets which constitute a
        reconstructed data product, cf.
        expected_packets.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="sample_bit_mask">
    <xs:annotation>
      <xs:documentation>The sample_bit_mask attribute Specifies the
        active bits in a sample. Any bit mask is valid in an non-raw
        product. Any 8-bit product, whether a scaled raw product or
        other, will have the value "2#11111111" and be stored in one
        byte. Any 12-bit product, whether an unscaled raw product, or an
        ILUT partially-processed product (see companding_method), will
        have the value "2#0000111111111111" and be stored in two bytes.
        A 15-bit product (e.g. Radiometrically-corrected Calibrated
        product type) will have the value "2#0111111111111111" and be
        stored in two bytes. Any 32-bit integer product (e.g. Histogram
        Raw product) will have the value
        "2#11111111111111111111111111111111" and be stored in four
        bytes. For floating-point data, sample_bit_mask is not valid and
        may be absent. If present, it should be ignored. NOTE: In the
        PDS, the domain of sample_bit_mask is dependent upon the
        currently-described value in the sample_bits attribute and only
        applies to integer values.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="sample_bits">
    <xs:annotation>
      <xs:documentation>The sample_bits attribute specifies the logical
        or active number of bits in the data, which is distinct from the
        physical number of bits (for example, encoding 12-bit data
        within 16-bit words). These logical bits are stored in the low
        order (least significant) bits, with unused bits filled with 0
        (or 1 for negative integers to preserve a two's complement
        representation). This is distinct from the valid data range
        (specified by valid_minimum and valid_maximum in
        Special_Constants class) because all values, including
        missing/invalid flag values, must fit within the sample_bits.
        The intent is that the data should be able to be sent through a
        communication channel that passes only sample_bits with no loss
        in fidelity.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="samples">
    <xs:annotation>
      <xs:documentation> The samples attribute indicates the total
        number of data instances along the horizontal axis of an image
        or sub-image.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="sampling_factor">
    <xs:annotation>
      <xs:documentation> The sampling_factor attribute provides the
        value N, where every Nth data point was kept from the original
        data set by selection, averaging, or taking the median. When
        applied to an image object, the single value represented in
        sampling_factor applies to both the lines and the
        samples.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="segment_count">
    <xs:annotation>
      <xs:documentation> The segment_count attribute identifies the
        number of segments into which the image was partitioned for
        error containment purposes.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="0"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="segment_number">
    <xs:annotation>
      <xs:documentation> The segment_number attribute identifies which
        compression segment is described in the current Segment class.
        </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="segment_quality">
    <xs:annotation>
      <xs:documentation> The segment_quality attribute identifies the
        resultant or targeted image quality index for on-board ICER data
        compression. Upon return by the ICER decompress function, the
        output quantity segment_quality provides an indication of the
        quality of the reconstructed segment. Specifically, the value
        returned is a double for which the integer values correspond to
        attained min loss values, but in general is an interpolation
        between these values. Thus lower values of segment_quality
        correspond to higher reconstructed qualities, and a value of
        indicates lossless compression. Note that the compressed stream
        does not directly contain the value of min loss that was given
        to the compressor, but the decompressor does know how far along
        in the decompression process it got before it ran out of bits;
        this information is used to determine segment_quality. In rare
        circumstances the decompressor m ay not be able to determine
        segment_quality for a segment that it decompresses. In this case
        it sets segment_quality to 1.0. The reconstructed segment might
        be either lossy or lossless when this occurs. The technical
        condition under which a quality value is not determined is that
        the decompressor runs out of the data for the segment before
        decoding any bit plane information. </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="-1.7976931348623157e308"/>
     <xs:maxInclusive value="1.7976931348623157e308"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="segment_status">
    <xs:annotation>
      <xs:documentation> The segment_status attribute provides a bit
        mask which provides the status of decoding for the compression
        segment identified by segment_number. Upon return by the ICER
        decompress function, the output quantity of segment_status
        contains a number indicating the decode status. The decode
        status may have one or more of the following flags set:
        SHORTDATASEG FLAG (bit 0): If this flag is set, then the segment
        contained so little data that nothing could be reconstructed in
        the segment. INCONSISTENTDATA FLAG (bit 1): If this flag is set,
        then one or more pieces of information in the segment header
        (specifically, image width, image height, n segs, wavelet
        filter, n decomps) are inconsistent with the value(s) in the
        first (valid) segment. ICER will ignore the data in this
        segment. DUPLICATESEG FLAG (bit 2): If this flag is set, then
        the segment index given in the header equals that given by a
        previous segment. The decompressor will ignore the data in this
        segment. BADBITPLANENUMBER FLAG (bit 3): If this flag is set,
        then an ICER internal parameter in the header for this segment
        has probably been corrupted. The decompressor will ignore the
        data in this segment. BADBITPLANECOUNT FLAG (bit 4): If this
        flag is set, then an ICER internal parameter in the header for
        this segment has probably been corrupted. The decompressor will
        ignore the data in this segment. BADDATA FLAG (bit 5): If this
        flag is set, then either the parameter combination given in the
        header for this segment are not allowed by ICER, or the segment
        number is bad. This probably indicates corrupted data. The
        decompressor will ignore the data in this segment.
        </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Numeric_Base2">
    	<xs:pattern value='[0-1]{1,255}'/>
     <xs:minLength value="1"/>
     <xs:maxLength value="6"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="sequence_number">
    <xs:annotation>
      <xs:documentation>The sequence_number attribute supplies the
        sequence identifier for the associated value in a group of
        related values. </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="shutter_subtraction_mode">
    <xs:annotation>
      <xs:documentation>The shutter_subtraction_mode specifies whether
        shutter subtraction will be performed, or if it is dependent on
        the exposure_duration_threshold_count.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="subframe_type">
    <xs:annotation>
      <xs:documentation> The subframe_type attribute specifies the
        method of subframing performed on the image. These methods may
        vary by mission so the permissible values should be set by the
        mission dictionaries. Example values from MSL include a)
        'Software Only' - Software processsing only. b) 'Hardware
        Compatible' - Use hardware only if compatible. c) 'Hardware Else
        Software' - Use hardware then software. d) 'Subframe Around Sun'
        - If the sun is found, send a subframed image of the sun. If sun
        is not found, send back no image.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="temperature_value_WO_Units">
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="-1.7976931348623157e308"/>
     <xs:maxInclusive value="1.7976931348623157e308"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="temperature_value">
    <xs:annotation>
      <xs:documentation>The temperature_value attribute provides the
        temperature, in the specified units, of some point on an imaging
        instrument or other imaging instrument device.</xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="img:temperature_value_WO_Units">
        <xs:attribute name="unit" type="pds:Units_of_Temperature" use="required" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name="value_number">
    <xs:annotation>
      <xs:documentation>The value_number attribute provides the value
        with no applicable units as named by the associated id, name, or
        sequence_number. </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="-1.7976931348623157e308"/>
     <xs:maxInclusive value="1.7976931348623157e308"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="value_string">
    <xs:annotation>
      <xs:documentation>The value_string attribute provides the value
        with no applicable units as named by the associated id, name, or
        sequence_number. </xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="-1.7976931348623157e308"/>
     <xs:maxInclusive value="1.7976931348623157e308"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="voltage_value_WO_Units">
    <xs:restriction base="pds:ASCII_Real">
    	<xs:pattern value='[-+]?[0-9]+(\.?[0-9]+)?([eE][-+]?[0-9]+)?'/>
     <xs:minInclusive value="-1.7976931348623157e308"/>
     <xs:maxInclusive value="1.7976931348623157e308"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="voltage_value">
    <xs:annotation>
      <xs:documentation>The voltage_value attribute provides provides
        the voltage, in the specified units, of an imaging instrument or
        some part of the imaging instrument.</xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="img:voltage_value_WO_Units">
        <xs:attribute name="unit" type="pds:Units_of_Voltage" use="required" />
        <xs:attribute name="nilReason" type="pds:nil_reason" use="optional" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name="wavelet_filter">
    <xs:annotation>
      <xs:documentation>The wavelet_filter attribute specifies thefilter
        used in the compression and decompression
        algorithm.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="pds:ASCII_Short_String_Collapsed">
     <xs:minLength value="1"/>
     <xs:maxLength value="255"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="width_pixels_WO_Units">
    <xs:restriction base="pds:ASCII_NonNegative_Integer">
    	<xs:pattern value='[0-9]+'/>
     <xs:minInclusive value="1"/>
     <xs:maxInclusive value="18446744073709551615"/>
	   </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="width_pixels">
    <xs:annotation>
      <xs:documentation>The width_pixels attribute provides the
        horizontal dimension, in pixels.</xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base="img:width_pixels_WO_Units">
        <xs:attribute name="unit" type="pds:Units_of_Misc" use="required" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>
 
  <xs:annotation>
    <xs:documentation>
[
  {
    "dataDictionary": {
      "Title": "PDS4 Data Dictionary" ,
      "Version": "1.9.0.0" ,
      "Date": "Fri Dec 29 21:16:40 PST 2017" ,
      "Description": "This document is a dump of the contents of the PDS4 Data Dictionary" ,
      "PropertyMapDictionary": [
        {"PropertyMaps": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.Element_Array.pds.scaling_factor.100003317" ,
            "title": "null" ,
            "namespace_id": "null" ,
            "description": "VICAR Keyword property maps" ,
            "external_property_map_id": "null"
          , "propertyMapList": [
              {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.Element_Array.pds.scaling_factor" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.pds.Element_Array.pds.scaling_factor" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:Element_Array\/pds:scaling_factor" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "DERIVED_IMAGE_PARMS.RADIANCE_SCALING_FACTOR" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.DERIVED_IMAGE_PARMS.RADIANCE_SCALING_FACTOR" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img_surf.Derived_Product_Parameters.img_surf.Coordinate_Space_Reference" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img_surf.Derived_Product_Parameters.img_surf.Coordinate_Space_Reference" ,
                  "model_object_type": "Class" ,
                  "instance_id": "\/\/img_surf:Derived_Product_Parameters\/img_surf:Coordinate_Space_Reference" ,
                  "external_namespace_id": "img_surf" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "DERIVED_IMAGE_PARMS.REFERENCE_COORD_SYSTEM_INDEX" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.DERIVED_IMAGE_PARMS.REFERENCE_COORD_SYSTEM_INDEX" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img.Command_Parameters.img.Data_Correction_Parameters" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img.Command_Parameters.img.Data_Correction_Parameters" ,
                  "model_object_type": "Class" ,
                  "instance_id": "\/\/img:Command_Parameters\/img:Data_Correction_Parameters" ,
                  "external_namespace_id": "img" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "OBSERVATION_REQUEST_PARMS.SHUTTER_CORRECTION_MODE" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.OBSERVATION_REQUEST_PARMS.SHUTTER_CORRECTION_MODE" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img.Command_Parameters.img.detector_erase_count" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img.Command_Parameters.img.detector_erase_count" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img:Command_Parameters\/img:detector_erase_count" ,
                  "external_namespace_id": "img" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "OBSERVATION_REQUEST_PARMS.DETECTOR_ERASE_COUNT" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.OBSERVATION_REQUEST_PARMS.DETECTOR_ERASE_COUNT" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img.Exposure_Parameters.img.exposure_duration_count" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img.Exposure_Parameters.img.exposure_duration_count" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img:Exposure_Parameters\/img:exposure_duration_count" ,
                  "external_namespace_id": "img" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "OBSERVATION_REQUEST_PARMS.EXPOSURE_DURATION_COUNT" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.OBSERVATION_REQUEST_PARMS.EXPOSURE_DURATION_COUNT" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img.Image_Product_Information.img.Data_Correction_Parameters" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img.Image_Product_Information.img.Data_Correction_Parameters" ,
                  "model_object_type": "Class" ,
                  "instance_id": "\/\/img:Image_Product_Information\/img:Data_Correction_Parameters" ,
                  "external_namespace_id": "img" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "INSTRUMENT_STATE_PARMS.SHUTTER_CORRECTION_MODE" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.INSTRUMENT_STATE_PARMS.SHUTTER_CORRECTION_MODE" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img.Radiometric_Correction_Parameters.img.radiometric_correction_type_name" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img.Radiometric_Correction_Parameters.img.radiometric_correction_type_name" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img:Radiometric_Correction_Parameters\/img:radiometric_correction_type_name" ,
                  "external_namespace_id": "img" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "DERIVED_IMAGE_PARMS.RADIOMETRIC_CORRECTION_TYPE" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.DERIVED_IMAGE_PARMS.RADIOMETRIC_CORRECTION_TYPE" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img.Pixel_Averaging_Dimensions.img.height_pixels" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img.Pixel_Averaging_Dimensions.img.height_pixels" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img:Pixel_Averaging_Dimensions\/img:height_pixels" ,
                  "external_namespace_id": "img" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "INSTRUMENT_STATE_PARMS.PIXEL_AVERAGING_HEIGHT" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.INSTRUMENT_STATE_PARMS.PIXEL_AVERAGING_HEIGHT" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
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                , "propertyMapEntryList": [
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                  "description": "VICAR Keyword property maps"
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                , "propertyMapEntryList": [
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                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                  "instance_id": "\/\/img:Imaging_Instrument_State_Parameters\/img:analog_offset" ,
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                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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            , {"PropertyMap": {
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                  "description": "VICAR Keyword property maps"
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                  "description": "VICAR Keyword property maps"
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                  "description": "VICAR Keyword property maps"
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                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                , "propertyMapEntryList": [
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                  "description": "VICAR Keyword property maps"
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                    }
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                    ]
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                  "model_object_id": "0001_NASA_PDS_1.img_surf.Mars_Surface_Imaging_Parameters.img_surf.instrument_mode_id" ,
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                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
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                    }
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                  "model_object_id": "0001_NASA_PDS_1.img_surf.Mars_Surface_Imaging_Parameters.img_surf.product_completion_status" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img_surf:Mars_Surface_Imaging_Parameters\/img_surf:product_completion_status" ,
                  "external_namespace_id": "img_surf" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
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                    }
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                    ]
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            , {"PropertyMap": {
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                  "model_object_id": "0001_NASA_PDS_1.img_surf.Mars_Surface_Imaging_Parameters.img_surf.received_packets" ,
                  "model_object_type": "Attribute" ,
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                  "external_namespace_id": "img_surf" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "TELEMETRY.RECEIVED_PACKETS" }
                    }
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                    }
                    ]
                 }
              }
            , {"PropertyMap": {
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                  "model_object_id": "0001_NASA_PDS_1.img_surf.Mars_Surface_Imaging_Parameters.img_surf.stereo_match_id" ,
                  "model_object_type": "Attribute" ,
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                  "external_namespace_id": "img_surf" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "IDENTIFICATION.STEREO_MATCH_ID" }
                    }
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                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img_surf.Mars_Surface_Imaging_Parameters.img_surf.surface_gravity" ,
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                  "model_object_type": "Attribute" ,
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                  "external_namespace_id": "img_surf" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "ARM_ARTICULATION_STATE.GRAVITY_ACCELERATION" }
                    }
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                    ]
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            , {"PropertyMap": {
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                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img_surf.Mars_Surface_Imaging_Parameters.img_surf.telemetry_application_id" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img_surf:Mars_Surface_Imaging_Parameters\/img_surf:telemetry_application_id" ,
                  "external_namespace_id": "img_surf" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "TELEMETRY.APPLICATION_PROCESS_ID" }
                    }
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                    }
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              }
            , {"PropertyMap": {
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                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img_surf.Mars_Surface_Imaging_Parameters.img_surf.telemetry_application_name" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img_surf:Mars_Surface_Imaging_Parameters\/img_surf:telemetry_application_name" ,
                  "external_namespace_id": "img_surf" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "TELEMETRY.APPLICATION_PROCESS_NAME" }
                    }
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                    }
                    ]
                 }
              }
            , {"PropertyMap": {
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                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img_surf.Mars_Surface_Imaging_Parameters.img_surf.telemetry_provider_id" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img_surf:Mars_Surface_Imaging_Parameters\/img_surf:telemetry_provider_id" ,
                  "external_namespace_id": "img_surf" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "TELEMETRY.TELEMETRY_PROVIDER_ID" }
                    }
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                    ]
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            , {"PropertyMap": {
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                  "model_object_id": "0001_NASA_PDS_1.img_surf.Mars_Surface_Imaging_Parameters.img_surf.telemetry_source_name" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img_surf:Mars_Surface_Imaging_Parameters\/img_surf:telemetry_source_name" ,
                  "external_namespace_id": "img_surf" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                        "property_name": "VICAR" ,
                        "property_value": "TELEMETRY.TELEMETRY_SOURCE_NAME" }
                    }
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                    }
                    ]
                 }
              }
            , {"PropertyMap": {
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                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img_surf.Mars_Surface_Imaging_Parameters.img_surf.telemetry_transport_protocol" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img_surf:Mars_Surface_Imaging_Parameters\/img_surf:telemetry_transport_protocol" ,
                  "external_namespace_id": "img_surf" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "TELEMETRY.TELEMETRY_SOURCE_TYPE" }
                    }
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                        "property_value": "$label.TELEMETRY.TELEMETRY_SOURCE_TYPE" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.insight.Camera_Instrument_Parameters.insight.mesh_id" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.insight.Camera_Instrument_Parameters.insight.mesh_id" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/insight:Camera_Instrument_Parameters\/insight:mesh_id" ,
                  "external_namespace_id": "insight" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                        "property_name": "VICAR" ,
                        "property_value": "IDENTIFICATION.MESH_ID" }
                    }
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                    ]
                 }
              }
            , {"PropertyMap": {
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                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.insight.Camera_Instrument_Parameters.insight.mosaic_id" ,
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                  "instance_id": "\/\/insight:Camera_Instrument_Parameters\/insight:mosaic_id" ,
                  "external_namespace_id": "insight" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                        "property_name": "VICAR" ,
                        "property_value": "IDENTIFICATION.MOSAIC_ID" }
                    }
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                    ]
                 }
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            , {"PropertyMap": {
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                  "model_object_id": "0001_NASA_PDS_1.insight.Observation_Information.insight.earth_received_start_date_time" ,
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                  "instance_id": "\/\/insight:Observation_Information\/insight:earth_received_start_date_time" ,
                  "external_namespace_id": "insight" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                    ]
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            , {"PropertyMap": {
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                  "model_object_id": "0001_NASA_PDS_1.insight.Observation_Information.insight.earth_received_stop_date_time" ,
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                  "instance_id": "\/\/insight:Observation_Information\/insight:earth_received_stop_date_time" ,
                  "external_namespace_id": "insight" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                    ]
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            , {"PropertyMap": {
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                  "model_object_id": "0001_NASA_PDS_1.insight.Observation_Information.insight.local_true_solar_time_sol" ,
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                  "instance_id": "\/\/insight:Observation_Information\/insight:local_true_solar_time_sol" ,
                  "external_namespace_id": "insight" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                    }
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                    ]
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              }
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                  "external_namespace_id": "insight" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                    ]
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            , {"PropertyMap": {
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                  "external_namespace_id": "insight" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                        "property_name": "VICAR" ,
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                    ]
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            , {"PropertyMap": {
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                  "external_namespace_id": "insight" ,
                  "description": "VICAR Keyword property maps"
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                    }
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                    ]
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            , {"PropertyMap": {
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                  "external_namespace_id": "insight" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                        "property_name": "VICAR" ,
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            , {"PropertyMap": {
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                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                    }
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            , {"PropertyMap": {
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                  "model_object_id": "0001_NASA_PDS_1.insight.Observation_Information.insight.spacecraft_clock_stop_count" ,
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                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                        "property_name": "VICAR" ,
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                    }
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                    ]
                 }
              }
            , {"PropertyMap": {
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                  "title": "null" ,
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                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                        "property_name": "VICAR" ,
                        "property_value": "IDENTIFICATION.TARGET_NAME" }
                    }
                  , {"PropertyMapEntry": {
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                    ]
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              }
            , {"PropertyMap": {
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                  "instance_id": "\/\/pds:Time_Coordinates\/pds:local_mean_solar_time" ,
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                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                        "property_name": "VICAR" ,
                        "property_value": "IDENTIFICATION.LOCAL_MEAN_SOLAR_TIME" }
                    }
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                    ]
                 }
              }
            , {"PropertyMap": {
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                  "model_object_id": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.local_true_solar_time" ,
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                  "instance_id": "\/\/pds:Time_Coordinates\/pds:local_true_solar_time" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                        "property_name": "VICAR" ,
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                    }
                  , {"PropertyMapEntry": {
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                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.Time_Coordinates.pds.solar_longitude" ,
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                  "model_object_id": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.solar_longitude" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:Time_Coordinates\/pds:solar_longitude" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "IDENTIFICATION.SOLAR_LONGITUDE" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
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                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.Time_Coordinates.pds.start_date_time" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.start_date_time" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:Time_Coordinates\/pds:start_date_time" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                    }
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                    ]
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              }
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                  "model_object_id": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.stop_date_time" ,
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                  "instance_id": "\/\/pds:Time_Coordinates\/pds:stop_date_time" ,
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                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
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                    }
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                    ]
                 }
              }
            , {"PropertyMap": {
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                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.pds.Array_3D_Image.pds.axes" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:Array_3D_Image\/pds:axes" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "IMAGE_DATA.BANDS" }
                    }
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                    ]
                 }
              }
            , {"PropertyMap": {
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                  "model_object_id": "0001_NASA_PDS_1.pds.Array_3D_Image.pds.axis_index_order" ,
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                  "instance_id": "\/\/pds:Array_3D_Image\/pds:axis_index_order" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                        "property_name": "VICAR" ,
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                    }
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                    }
                    ]
                 }
              }
            , {"PropertyMap": {
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                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.pds.Element_Array.pds.unit" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:Element_Array\/pds:unit" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                    }
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                        "property_value": "$label.DERIVED_IMAGE_PARMS.RADIANCE_OFFSET__UNIT" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
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                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.pds.Element_Array.pds.unit" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:Element_Array\/pds:unit" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                        "property_value": "DERIVED_IMAGE_PARMS.RADIANCE_SCALING_FACTOR__UNIT" }
                    }
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                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.Element_Array.pds.value_offset" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.pds.Element_Array.pds.value_offset" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:Element_Array\/pds:value_offset" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "DERIVED_IMAGE_PARMS.RADIANCE_OFFSET" }
                    }
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                    }
                    ]
                 }
              }
            , {"PropertyMap": {
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                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.pds.Special_Constants.pds.invalid_constant" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:Special_Constants\/pds:invalid_constant" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
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                    }
                  , {"PropertyMapEntry": {
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                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.Special_Constants.pds.missing_constant" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.pds.Special_Constants.pds.missing_constant" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:Special_Constants\/pds:missing_constant" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "IMAGE_DATA.MISSING_CONSTANT" }
                    }
                  , {"PropertyMapEntry": {
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                        "property_value": "$label.IMAGE_DATA.MISSING_CONSTANT" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.File.pds.creation_date_time" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.pds.File.pds.creation_date_time" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:File\/pds:creation_date_time" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "IDENTIFICATION.PRODUCT_CREATION_TIME" }
                    }
                  , {"PropertyMapEntry": {
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                        "property_value": "$label.IDENTIFICATION.PRODUCT_CREATION_TIME" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
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                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.pds.Identification_Area.pds.title" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:Identification_Area\/pds:title" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "IDENTIFICATION.INSTRUMENT_ID" }
                    }
                  , {"PropertyMapEntry": {
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                        "property_value": "$label.IDENTIFICATION.INSTRUMENT_ID" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.cart.Map_Projection_Lander.cart.Coordinate_Space_Reference" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.cart.Map_Projection_Lander.cart.Coordinate_Space_Reference" ,
                  "model_object_type": "Class" ,
                  "instance_id": "\/\/cart:Map_Projection_Lander\/cart:Coordinate_Space_Reference" ,
                  "external_namespace_id": "cart" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "SURFACE_PROJECTION_PARMS.REFERENCE_COORD_SYSTEM_INDEX" }
                    }
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                        "property_name": "Velocity" ,
                        "property_value": "$label.SURFACE_PROJECTION_PARMS.REFERENCE_COORD_SYSTEM_INDEX" }
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                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.cart.Map_Projection_Lander.cart.Coordinate_Space_Reference" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.cart.Map_Projection_Lander.cart.Coordinate_Space_Reference" ,
                  "model_object_type": "Class" ,
                  "instance_id": "\/\/cart:Map_Projection_Lander\/cart:Coordinate_Space_Reference" ,
                  "external_namespace_id": "cart" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "SURFACE_PROJECTION_PARMS.REFERENCE_COORD_SYSTEM_NAME" }
                    }
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                        "property_name": "Velocity" ,
                        "property_value": "$label.SURFACE_PROJECTION_PARMS.REFERENCE_COORD_SYSTEM_NAME" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
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                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.geom.Camera_Model_Parameters.geom.model_type" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/geom:Camera_Model_Parameters\/geom:model_type" ,
                  "external_namespace_id": "geom" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "GEOMETRIC_CAMERA_MODEL.MODEL_TYPE" }
                    }
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                        "property_name": "Velocity" ,
                        "property_value": "$label.GEOMETRIC_CAMERA_MODEL.MODEL_TYPE" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.geom.Coordinate_Space_Present.geom.Coordinate_Space_Indexed.geom.solution_id" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.geom.Coordinate_Space_Present.geom.Coordinate_Space_Indexed.geom.solution_id" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/geom:Coordinate_Space_Present\/geom:Coordinate_Space_Indexed\/geom:solution_id" ,
                  "external_namespace_id": "geom" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "ARM_COORDINATE_SYSTEM.SOLUTION_ID" }
                    }
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                        "property_value": "$label.ARM_COORDINATE_SYSTEM.SOLUTION_ID" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img.Image_Compression_Parameters.img.compression_mode_name" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img.Image_Compression_Parameters.img.compression_mode_name" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img:Image_Compression_Parameters\/img:compression_mode_name" ,
                  "external_namespace_id": "img" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "COMPRESSION.INST_CMPRS_NAME" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.COMPRESSION.INST_CMPRS_NAME" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img.Image_Compression_Parameters.img.compression_rate" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img.Image_Compression_Parameters.img.compression_rate" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img:Image_Compression_Parameters\/img:compression_rate" ,
                  "external_namespace_id": "img" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "COMPRESSION.INST_CMPRS_RATE" }
                    }
                  , {"PropertyMapEntry": {
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                        "property_value": "$label.COMPRESSION.INST_CMPRS_RATE" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img.Image_Compression_Parameters.img.compression_ratio" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img.Image_Compression_Parameters.img.compression_ratio" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img:Image_Compression_Parameters\/img:compression_ratio" ,
                  "external_namespace_id": "img" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "COMPRESSION.INST_CMPRS_RATIO" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.COMPRESSION.INST_CMPRS_RATIO" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img.JPEG_Parameters.img.color_subsampling_mode" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img.JPEG_Parameters.img.color_subsampling_mode" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img:JPEG_Parameters\/img:color_subsampling_mode" ,
                  "external_namespace_id": "img" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "COMPRESSION.INST_CMPRS_COLOR_MODE" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.COMPRESSION.INST_CMPRS_COLOR_MODE" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img.JPEG_Parameters.img.jpeg_quality" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img.JPEG_Parameters.img.jpeg_quality" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img:JPEG_Parameters\/img:jpeg_quality" ,
                  "external_namespace_id": "img" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "COMPRESSION.INST_CMPRS_QUALITY" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.COMPRESSION.INST_CMPRS_QUALITY" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img.Filter.img.Bayer_Parameters" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img.Filter.img.Bayer_Parameters" ,
                  "model_object_type": "Class" ,
                  "instance_id": "\/\/img:Filter\/img:Bayer_Parameters" ,
                  "external_namespace_id": "img" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "INSTRUMENT_STATE_PARMS.BAYER_MODE" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.INSTRUMENT_STATE_PARMS.BAYER_MODE" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img.Companding_Parameters.img.companding_state" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img.Companding_Parameters.img.companding_state" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/img:Companding_Parameters\/img:companding_state" ,
                  "external_namespace_id": "img" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "INSTRUMENT_STATE_PARMS.SAMPLE_BIT_METHOD" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.INSTRUMENT_STATE_PARMS.SAMPLE_BIT_METHOD" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.img_surf.Derived_Product_Parameters.img_surf.Coordinate_Space_Reference" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.img_surf.Derived_Product_Parameters.img_surf.Coordinate_Space_Reference" ,
                  "model_object_type": "Class" ,
                  "instance_id": "\/\/img_surf:Derived_Product_Parameters\/img_surf:Coordinate_Space_Reference" ,
                  "external_namespace_id": "img_surf" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "DERIVED_IMAGE_PARMS.REFERENCE_COORD_SYSTEM_NAME" }
                    }
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                        "property_name": "Velocity" ,
                        "property_value": "$label.DERIVED_IMAGE_PARMS.REFERENCE_COORD_SYSTEM_NAME" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.Observing_System_Component.pds.name" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.pds.Observing_System_Component.pds.name" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:Observing_System_Component\/pds:name" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
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                        "property_name": "VICAR" ,
                        "property_value": "IDENTIFICATION.INSTRUMENT_NAME" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.IDENTIFICATION.INSTRUMENT_NAME" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.Target_Identification.pds.type" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.pds.Target_Identification.pds.type" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:Target_Identification\/pds:type" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "IDENTIFICATION.TARGET_TYPE" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.IDENTIFICATION.TARGET_TYPE" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.Internal_Reference.pds.lid_reference" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.pds.Internal_Reference.pds.lid_reference" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/pds:Internal_Reference\/pds:lid_reference" ,
                  "external_namespace_id": "pds" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "IDENTIFICATION.SOURCE_PRODUCT_ID" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.IDENTIFICATION.SOURCE_PRODUCT_ID" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.proc.Processing_Information.proc.Input_Product_List" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.proc.Processing_Information.proc.Input_Product_List" ,
                  "model_object_type": "Class" ,
                  "instance_id": "\/\/proc:Processing_Information\/proc:Input_Product_List" ,
                  "external_namespace_id": "proc" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "DERIVED_IMAGE_PARMS.INPUT_PRODUCT_ID" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.DERIVED_IMAGE_PARMS.INPUT_PRODUCT_ID" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.cart.Surface_Model_Parameters.cart.Coordinate_Space_Reference" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.cart.Surface_Model_Parameters.cart.Coordinate_Space_Reference" ,
                  "model_object_type": "Class" ,
                  "instance_id": "\/\/cart:Surface_Model_Parameters\/cart:Coordinate_Space_Reference" ,
                  "external_namespace_id": "cart" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "SURFACE_MODEL_PARMS.REFERENCE_COORD_SYSTEM_INDEX" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.SURFACE_MODEL_PARMS.REFERENCE_COORD_SYSTEM_INDEX" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.cart.Surface_Model_Parameters.cart.Coordinate_Space_Reference" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.cart.Surface_Model_Parameters.cart.Coordinate_Space_Reference" ,
                  "model_object_type": "Class" ,
                  "instance_id": "\/\/cart:Surface_Model_Parameters\/cart:Coordinate_Space_Reference" ,
                  "external_namespace_id": "cart" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "SURFACE_MODEL_PARMS.REFERENCE_COORD_SYSTEM_NAME" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.SURFACE_MODEL_PARMS.REFERENCE_COORD_SYSTEM_NAME" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.cart.Vector_Surface_Ground_Location.cart.z_position" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.cart.Vector_Surface_Ground_Location.cart.z_position" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/cart:Vector_Surface_Ground_Location\/cart:z_position" ,
                  "external_namespace_id": "cart" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "SURFACE_MODEL_PARMS.SURFACE_GROUND_LOCATION" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.SURFACE_MODEL_PARMS.SURFACE_GROUND_LOCATION" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.cart.Horizontal_Coordinate_System_Definition.cart.Surface_Model_Parameters" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.cart.Horizontal_Coordinate_System_Definition.cart.Surface_Model_Parameters" ,
                  "model_object_type": "Class" ,
                  "instance_id": "\/\/cart:Horizontal_Coordinate_System_Definition\/cart:Surface_Model_Parameters" ,
                  "external_namespace_id": "cart" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "SURFACE_MODEL_PARMS.SURFACE_MODEL_TYPE" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.SURFACE_MODEL_PARMS.SURFACE_MODEL_TYPE" }
                    }
                    ]
                 }
              }
            , {"PropertyMap": {
                  "identifier": "0001_NASA_PDS_1.pds.Property_Map.cart.Vector_Surface_Normal.cart.z_unit" ,
                  "title": "null" ,
                  "model_object_id": "0001_NASA_PDS_1.cart.Vector_Surface_Normal.cart.z_unit" ,
                  "model_object_type": "Attribute" ,
                  "instance_id": "\/\/cart:Vector_Surface_Normal\/cart:z_unit" ,
                  "external_namespace_id": "cart" ,
                  "description": "VICAR Keyword property maps"
                , "propertyMapEntryList": [
                    {"PropertyMapEntry": {
                        "property_name": "VICAR" ,
                        "property_value": "SURFACE_MODEL_PARMS.SURFACE_NORMAL_VECTOR" }
                    }
                  , {"PropertyMapEntry": {
                        "property_name": "Velocity" ,
                        "property_value": "$label.SURFACE_MODEL_PARMS.SURFACE_NORMAL_VECTOR" }
                    }
                    ]
                 }
              }
            ]
          }
        }
      ]
    }
  }
]
    </xs:documentation>
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