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Moc Stereo Pairs, Generating DEMs
Bjorn Jonsson
post Mar 22 2005, 12:08 AM
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Can anyone point me to MOC stereo pairs in the MOC raw image archive ? I'm especially interested in Columbia Hills but more rough and interesting-looking terrain would also be interesting. What's happening is that I *may* soon be able to generate DEMs from stereo pairs. I don't know yet how good these DEMs will be, probably relatively crude. I have also been looking for suitable images in Cassini's coverage of Enceladus and in some of the Galileo images (I know there is a stereo pair of Ganymede's Galileo Regio for example). And then there are the MER images...
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Bjorn Jonsson
post Mar 22 2005, 06:00 PM
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Actually what I'm doing is writing a program that takes as input two images (a stereo pair), several control points and viewing geometry information for each image and uses this to generate a DEM. The fact that I need viewing geometry information is the main reason I wanted raw images.

I don't know how well this will work but the part that compares the images to find a point in image 2 corresponding to a point in image 1 seems very promising.
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Pertinax
post Mar 22 2005, 07:27 PM
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QUOTE (Bjorn Jonsson @ Mar 22 2005, 06:00 PM)
Actually what I'm doing is writing a program that takes as input two images (a stereo pair), several control points and viewing geometry information for each image and uses this to generate a DEM.


Bjorn,

What, if you don't mind me asking, are you using for control points? MOLA 'spot' elevations?

DEMS from MOC-NA pairs are something I have always wanted, but had not even the beginnings of the skills needed to produce! (Uultimately, fun terrain sources for rendering Mars in Terragen, etc.)

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