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3D MRO |
 Jun 18 2007, 11:10 AM
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 The Poet Dude  Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60  |
Has anyone else been drooling over the images here..?
Mars Unearthed 3D MRO images If anyone has, then can they tell me if this image is "vertically stretched" somehow? It looks very, um, spiky... 
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Jun 20 2007, 12:10 AM
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 IMG to PNG GOD Group: Moderator Posts: 2257 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
I've been frustratingly close to generating DEMs of Saturn's satellites for some time using my own software that generates DEMs from stereo pairs. The problem is that the resulting 'DEMs' are far too noisy and contain too many spurious features and artifacts to be useful. If just this $%#€% thing worked as I want it to I would also be able to generate DEMs of Mars using two images (a stereo pair).
If anyone knows of any free/cheap software that can do this properly I'd like to know although I'm not particularly optimistic. One possibly interesting piece of code I found yesterday though: http://cat.middlebury.edu/stereo/code.html I haven't looked at this carefully enough to know if it's interesting in this context but I'm not particularly optimistic. If anyone is curious, here is my 'DEM' of one of Rhea's many craters:  Ugly, noisy and contains lots of noise, gaps and spurious features/artifacts/peaks (some real features are also simply missing!) but at least the program has managed to clearly detect two craters. Related topics have been discussed before (in other words, this is not the first time I'm frustrated by my inability to generate nice DEMs ;-) ): http://www.unmannedspaceflight.com/index.p...2&hl=stereo http://www.unmannedspaceflight.com/index.p...4&hl=stereo http://www.unmannedspaceflight.com/index.p...8&hl=stereo http://www.unmannedspaceflight.com/index.p...3&hl=stereo |
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Stu 3D MRO Jun 18 2007, 11:10 AM
ngunn That site's great fun to explore. My impressio... Jun 18 2007, 01:11 PM um3k They have to be "vertically stretched." ... Jun 18 2007, 03:04 PM
ngunn QUOTE (um3k @ Jun 18 2007, 04:04 PM) It d... Jun 18 2007, 07:49 PM john_s Note that the apparent "vertical exaggeration... Jun 18 2007, 08:44 PM djellison The moment the DEM's are out and about and I c... Jun 18 2007, 08:51 PM DataMiner Actually, the "vertical stretching" has ... Jun 19 2007, 12:39 AM CosmicRocker I think vertical exaggeration is the proper term. ... Jun 19 2007, 04:21 AM DataMiner QUOTE (CosmicRocker @ Jun 18 2007, 09:21 ... Jun 19 2007, 02:26 PM dilo Thanks Steward for the fantastic link. I'm ama... Jun 19 2007, 07:57 PM Art Martin I'm curious, if one had the original left and ... Jun 19 2007, 09:18 PM djellison Well - with good stereo you can generate a DEM, an... Jun 19 2007, 09:36 PM malgar QUOTE (Bjorn Jonsson @ Jun 20 2007, 02:10... Aug 22 2007, 08:48 AM Malmer QUOTE (Bjorn Jonsson @ Jun 20 2007, 02:10... Aug 22 2007, 09:44 PM Bjorn Jonsson QUOTE (Malmer @ Aug 22 2007, 09:44 PM) th... Aug 23 2007, 12:27 AM |
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