Evaluating stereo DTM quality at Jezero Crater, Mars with HRSC, CTX, and HiRISE images

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Abstract

We have used a high-precision, high-resolution digital terrain model (DTM) of the NASA Mars 2020 rover Perseverance landing site in Jezero crater based on mosaicked images from the Mars Reconnaissance Orbiter High Resolution Imaging Science Experiment (MRO HiRISE) camera as a reference dataset to evaluate DTMs based on Mars Express High Resolution Stereo Camera (MEX HRSC) and MRO Context camera (CTX) images. Results are consistent with our earlier HRSC-HiRISE comparisons at the Mars Science Laboratory (MSL) Curiosity landing site in Gale crater, confirming that those results were not compromised by the small area compared and potential problems with spatial registration. Specifically, height errors are on the order of half a pixel and correspond to an image matching error of 0.2–0.3 pixel but estimates of horizontal resolution are 10–20 pixels. Products from the HRSC team pipeline at DLR are smoother but more precise vertically than those produced by using the commercial stereo package SOCET SET®. The DLR products are also homogenous in quality, whereas the SOCET products are less smoothed and have higher errors in rougher terrain. Despite this weak variation, our results are consistent with a rule of thumb of 0.2–0.3 pixel matching precision based on many prior studies. Horizontal resolution is significantly coarser than the DTM ground sample distance (GSD), which is typically 3–5 pixels.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Evaluating stereo DTM quality at Jezero Crater, Mars with HRSC, CTX, and HiRISE images
DOI 10.5194/isprs-archives-XLIII-B3-2020-1129-2020
Volume 43
Issue B3
Year Published 2020
Language English
Publisher International Society for Photogrammetry and Remote Sensing
Contributing office(s) Astrogeology Science Center
Description 8 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title International archives of the photogrammetry, remote sensing, and spatial information sciences
First page 1129
Last page 1136
Conference Title XXIV ISPRS Congress 2020
Conference Location Nice, France
Conference Date Aug 31-Sep 2, 2020
Other Geospatial Mars
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