Abstract
The surface of Mars has been an object of interest for planetary research since the launch of Mariner 4 in 1964. Since then different cameras such as the Viking Visual Imaging Subsystem (VIS), Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC), and Mars Reconnaissance Orbiter (MRO) Context Camera (CTX) and High Resolution Imaging Science Experiment (HiRISE) have been imaging its surface at ever higher resolution. The High Resolution Stereo Camera (HRSC) on board of the European Space Agency (ESA) Mars Express, has been imaging the Martian surface, since 25th December 2003 until the present-day. HRSC has covered 100 % of the surface of Mars, about 70 % of the surface with panchromatic images at 10-20 m/pixel, and about 98 % at better than 100 
Highlights
The HRSC (High Resolution Stereo Camera) on board of the European Space Agency (ESA) Mars Express spacecraft has been mapping Mars in stereo (3 views), polarisation (2 views) and four-band colour coverage since 25 December 2003, covering ≈98% Martian surface at 100 m/ pixel or better (Neukum, et al, 2004)
As HRSC has covered 98% of the Martian surface, the south polar region of Mars has been covered by HRSC
At the time of writing, there are 11 189 level 3 and above HRSC and SRC products in nadir view, with 3689 of them level 3 images that have been orthorectified with MOLA height data doi:10.5194/isprsarchives-XLI-B4-463-2016
Summary
The HRSC (High Resolution Stereo Camera) on board of the ESA Mars Express spacecraft has been mapping Mars in stereo (3 views), polarisation (2 views) and four-band colour coverage since 25 December 2003, covering ≈98% Martian surface at 100 m/ pixel or better (Neukum, et al, 2004). HRSC has been taking images of Mars for more than 12 years, with multiple acquisitions taken over the same area (see Sidiropoulos and Muller, 2015b). The repeat HRSC images are suited for change detection research of the Mars surface, especially if coregistered and combined with images from other cameras orbiting Mars (Sidiropoulos and Muller, 2015a). Its stereo cameras ensure that there are stereo pairs for almost every orbit, allowing image matching to produce multiple 3D model feasible
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