1. Mars Express data workshop 21-23 May 2008: HRSC & OMEGA Washington University in St. Louis HRSCview: online version Greg Michael Planetology and Remote Sensing Institute of Geosciences Freie Universitaet Berlin

2. 2 HRSCview: online version - Tour… http://hrscview.fu-berlin.de - Entry page - Coverage maps - Pre-selected views - Image selection - Via footprint maps - Zooming, re-centring - Footprint shading - Archival DTM/orthimage map - Map scale - By surface coordinates - By image identifier - Composite modes - Nadir, elevation, slope, colour: mars-like, raw, stretched, enhanced, ratio, IR-substitution - Image scale - Perspective views - Direction, exaggeration - Data product pages - Image label items - Downloads: levels 2, 3, 4 - PDS, VICAR formats - Processing - Image lookup - Overlap map and look-up table - Subsetting - nadir, dtm, r-, g-, b-, ir-channels - (latitude, longitude) to (line, sample) - (map scale, view size) to (subset size) - Extract subset, downsampling if necessary - Upsample if necessary - Compositing - Stretch nadir - Colourise DTM - Stretch and composite (r,g,b) or (ir,g,b) or (ir/r,r/g,g/b) - Composite (nd, colour) or (nd, colourised DTM) with HSV transform (pan-sharpening) - Perspective projection - Project DTM with overlaid composite - Delivery - Package as jpeg image - Accompanying (lat, lon)-grid, distance and elevation bars Mars Express HRSC/OMEGA data workshop, St. Louis, 21-23 May 2008

3. 3 HRSC Stereo processing Preliminary 200m DTMs and orthoimages fully automatic processing sequence fast availability, for initial assessment of new data no quality control, orientation data not improved by bundle adjustment Archival HRSC DTMs (up to 50m resolution) and orthoimages generated at full resolution and based on refined orientation data Ongoing systematic processing (currently to orbit 1961) Within HRSCview: Absolute scales for MOLA areoid-referenced DTMs (.da4 products) Local relative scales for preliminary DTMs; some features not offered to avoid misinterpretations Mars Express HRSC/OMEGA data workshop, St. Louis, 21-23 May 2008

4. 4 Slope maps baseline slope is calculated over a two-displayed-pixel baseline where the displayed pixels are larger or equal to the DTM pixels; where the displayed pixels are smaller than the DTM pixels, the slope is calculated over a two DTM-pixel baseline. gradient/slope scales Mars Express HRSC/OMEGA data workshop, St. Louis, 21-23 May 2008

5. Mars Express data workshop 21-23 May 2008: HRSC & OMEGA Washington University in St. Louis HRSCview: local data version Greg Michael Planetology and Remote Sensing Institute of Geosciences Freie Universitaet Berlin

6. 6 HRSCview: local data version - Installation and set up - IDL virtual machine - HRSCview software: - http://hrscview.fu-berlin.de/software.html - mex4 directory, global basemap -Filenaming - Hxxxx_yyyy_NDL.IMG - ND - (ND, RE, GR, BL, IR, DT, DA) – channel/DTM - (ND, RE, GR, BL, IR, DT, DA) sets in single folder - User-generated product sets should differ by these 2-letter indicators only, e.g.: - mosaic.nd, mosaic.dt, mosaic.re etc. -Quick tour of features - Basic ones as online HRSCview - Footprint map - Panning, zooming - RGB without nadir - DTM: colour-scaled, shaded relief, contours - Stretch locks - Colour interpolation -DTM analysis tools - Volume and area measurements - Working DTM: copying, cutting, zero level shifting - Volumes relative to local surface (e.g. channels) - Defining local surface -Surface elevation profiles - Single and multi-section paths - Isotropic profiles - Export -Crater counting - Three-point marking - Crater table export - Including unit surface area Mars Express HRSC/OMEGA data workshop, St. Louis, 21-23 May 2008