Panorama Stitching, Rick Szeliski's Work Is the Best |
Panorama Stitching, Rick Szeliski's Work Is the Best |
Guest_DonPMitchell_* |
Aug 17 2006, 09:20 PM
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Guests |
I noticed the thread on Photosynth and thought I would add a little more about that research group. I know Rick Szeliski and Matt Uyttendaele, very smart people.
I've tried pretty much all of the panorama stitchers out there. Adobe's is by far the worst, and Microsoft's is by far the best. Szeliski's algorithms are currently found in Microsoft Image Suite 2006. Unlike most stitchers, it is based on a robust treatment of the general camera projective transformations, so it can handle rotations, panning, zooming and even limited camera-position changes (modulo big visiblity changes of course). [attachment=7042:attachment] Here's an example that first impressed me. In a Soviet documentary film I own, they discuss this diagram of the Venera soil-drilling apparatus, but they never show the whole diagram. They pan around and zoom in and out, and I didn't expect to be able to resolve all that into one image. I was quite surprised when Rick's program did it. An updated version of the stitcher is in a new product, Microsoft Graphic Designer, which will give users more control over a big class of transformations (affine, homography, 3D rotation, etc). It handles lens distortion and a variety of projection surfaces. I haven't tried it myself yet. link I have Panorama Factory and Autostitcher of course, but I never use them now, they are nowhere near as powerful as DIS2006. Uyttendaele also recommended a program to me called ptlens for some non-projective transformations like vignetting. |
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Sep 27 2006, 07:00 PM
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Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
Oops - cunning remote image link blocking...but I know the scene you mean.....yes, a little bit like that
Doug |
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Sep 27 2006, 09:27 PM
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IMG to PNG GOD Group: Moderator Posts: 2254 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
There is one thing that needs to be taken into account when comparing the apparent 'attitude' of the Cassini imaging team (or at least its PI) to that of the MER team:
Public realtime (or near-realtime) release of the MER imagery was the plan right from the start. Also of significance is that the MER project was started years after the WWW started. Cassini is a totally different beast. It was started as a project before the WWW even existed. The realtime release of Cassini images was applied 'retroactively', it was never planned. I'm not trying to justify anything some of the Cassini people may have said or done but I still think this is a significant factor. That said I think Cassini may be the last mission where this is a problem. The last US mission that is - ESA still has a lot to learn. Because of this, Malmer's decision to not publish anything from ongoing missions sounds drastic if I'm correct - this is not a problem with MER images and apparently not MRO either (hopefully we'll soon know). |
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