Mars Express HRSC Example
The High Resolution Stereo Camera (HRSC) rides aboard ESA's Mars Express. It is imaging the full planet in color and 3D with a resolution of about 10 meters/pixel.
Data Credit: ESA/Freie Universität Berlin, Germany
1.) Download the following files:
2.) Merge the color components into an RGB image (see Appendix C of the user guide for color adjustment):
gdal_merge.py -separate h0380_0001_re4.img h0380_0001_gr4.img h0380_0001_bl4.img -o h0380_0001_rgb.tif
3.) Scale the rgb image to the same scale as the nd (panchromatic) image:
gdalwarp -ts 8968 19632 -r bilinear h0380_0001_rgb.tif h0380_0001_rgbx4.tif
4.) Download the hsv_merge tool by Frank Warmerdam from here.
5.) Sharpen the rgb image with the panchromatic image:
./hsv_merge.py h0380_0001_rgbx4.tif h0380_0001_nd4.img h0380_0001_color.tif
6.) Crop the sharpened orthoimage to the same physical size as the DEM:
gdal_translate -mo "AREA_OR_POINT=Point" -strict -projwin -132025.000 -233000.000 92100.000 -723625.000 h0380_0001_color.tif h0380_0001_orthoimage.tif
7.) Resize DEM to be 1/4 the pixel resolution of the orthoimage:
gdalwarp -mo "AREA_OR_POINT=Point" -tr 100 100 -r bilinear h0380_0001_dt4.img h0380_0001_dem.tif
8.) Create a landscape directory called IusChasma.
9.) Create the elevation layer:
layerfactory -type=elevation -file=h0380_0001_dem.tif -tilesize=128 -landscape=IusChasma
10.) Create the orthoimage layer:
layerfactory -type=colorimage -file=h0380_0001_orthoimage.tif -tilesize=512 -landscape=IusChasma
11.) View the landscape in DERT.
