High Resolution Digital Terrain Models of Asteroid Ida: A Comparison Between Photogrammetry and the Shape-from-Shading Method

Details High Resolution Digital Terrain Models of Asteroid Ida: A Comparison Between Photogrammetry and the Shape-from-Shading Method High Resolution Digital Terrain Models of Asteroid Ida: A Comparison Between Photogrammetry and the Shape-from-Shading Method

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..409g&link_type=abstract

Lunar and Planetary Science, volume 27, page 409

Computer Science

Galileo, Ida, Stereo, Topography

Scientific paper

The asteroid Ida was imaged by the SSI camera during the second Galileo asteroid flyby in August 1993. We derived high resolution digital terrain models in selected regions of Ida based upon a rigorous photogrammetric analysis and compared these results with terrain models derived from a two-dimensional photoclinometric ("shape-from-shading") analysis. Our comparison shows that there are striking discrepancies between the two models depending on spatial scales of surface features. This suggests that surface morphology studies of the asteroid should not rely on just one of these models.

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