期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII Part B4
页码：993-998
出版社：Copernicus Publications
摘要：We have developed a processing workflow to extract very high resolution DTMs up to 0.5 - 4m grid - spacing from HiRise (Kim and Muller, 2007) and 12 - 18m gridded DTMs from CTX stereo pairs. This workflow relies on combining these data with the outputs of the UCL HRSC stereo processor, which is capable of producing 30 - 100m DTMs. This provides a unique capability to observe Martian topography at multiple resolutions. One of the most interesting applications for these data sets is local su rface roughness extraction. An iterative method is employed to try to reduce noise in DTM extraction and applied to reconstruct surface roughness data, fusing stereo DTM and MOLA beam broadening effect s. Accurate local surface roughness over a wide area w ill give important clues about the composition and origin of the Martian surface which has not been revealed before w ith methods developed to date
