HiRISE DEM's |
HiRISE DEM's |
Apr 13 2008, 10:46 AM
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#1
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Late last week I stumbled upon a few HiRISE derived DEM's (Randy Kirk works his magic once again!)
http://webgis.wr.usgs.gov/ftphirise/index.jsp (URL now down) I'm working on both Vic Crater and the Columbia Hills. Fortunately, now I've got a Mac, I can use ISIS. I've figured out a fairly simple flow ( isis2raw as 16 bit unsigned, and then imported into Photoshop ) to take DEM CUB's and make 16 bit PNG's Just to demo how important that is for me as an animator - sliced comparisons of 8bit vs 16 bit. A busy week unfortunately, but animations of various sorts are in the pipeline. |
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Feb 3 2010, 02:29 PM
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
What was amazing was that just the very tip of North Knob was visible - and bingo, the Viewshed called it out perfectly.
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Feb 5 2010, 10:08 PM
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#3
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Member Group: Members Posts: 713 Joined: 30-March 05 Member No.: 223 |
just out of interest, here are a few quick views of the pathfinder area ("twin peaks" and the area immediately surroundig the lander) rendered using the single-image shape-from-shading (SFS) method described in the other thread ...
although the SFS based DEMs are probably far less accurate overall than the near perfectly precise official stereo/altimeter based HiRISE DEMs, it is still amazes myself how much 3D detail can be squeezed out from a single image already... |
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