| Data Set Abstract |
This digital image map of Mars is a cartographic extension of a
previously released set of CD volumes containing individual
Viking Orbiter Images (PDS volumes VO_1001, VO_1002, etc.). The
data in the latter are pristine, in the sense that they were
processed only to the extent required to view them as images.
They contain the artifacts and the radiometric, geometric, and
photometric characteristics of the raw data transmitted by the
spacecraft. This new volume set, on the other hand, contains
cartographic compilations made by processing the raw images to
reduce radiometric and geometric distortions and to form
geodetically controlled Mosaicked Digital Image Models (MDIMs).
(Because the photometric processing used in this MDIM was
oversimplified, quantitative radiometric analysis on this data is
not possible.) It also contains digitized versions of an
airbrushed map of Mars as well as a listing of all IAU-approved
feature names. |
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