Digital cartography of the planets - New methods, its status, and its future

Physics – Geophysics

Scientific paper

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Computer Aided Mapping, Digital Techniques, Image Processing, Planetary Mapping, Data Bases, Geometric Rectification (Imagery), Mosaics, Photometry, Pixels, Radiometric Correction, Planets, Image Processing, Remote Sensing, Cartography, Computer Methods, Cameras, Procedure, Technique, Spacecraft Observations, Diagrams, Maps, Satellites, Photometry, Topography, Geology, Geophysics, Geochemistry, Imagery, Photographs, Radar Methods

Scientific paper

A system has been developed that establishes a standardized cartographic database for each of the 19 planets and major satellites that have been explored to date. Compilation of the databases involves both traditional and newly developed digital image processing and mosaicking techniques, including radiometric and geometric corrections of the images. Each database, or digital image model (DIM), is a digital mosaic of spacecraft images that have been radiometrically and geometrically corrected and photometrically modeled. During compilation, ancillary data files such as radiometric calibrations and refined photometric values for all camera lens and filter combinations and refined camera-orientation matrices for all images used in the mapping are produced. The system is designed to aid in the following: access to and utilization of spatial data returned by planetary spacecraft; coregistration of cartographic image and topographic elevation models with geological, geophysical, and geochemical databases; and the design and preparation of both standard and custom map products. A major goal of the project is to publish the DIMs on compact computer-compatible media such as digital-optical (CD-ROM) disks.

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