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| using a primesense as projector in photogrammetry http://www.diy3dscan.com/viewtopic.php?f=6&t=164 |
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| Author: | kiesel [ Wed Jul 17, 2013 4:50 pm ] |
| Post subject: | using a primesense as projector in photogrammetry |
This system is especially useful for textureless objects, where you need pattern projection. This isn't an idea of mine, but I think a lot of people of this forum have laying around the needed things at home to try this at least in parts: - a primesense sensor, which is projecting an infrared pattern on your subject - a camera with an infrared filter (or something like that for example an old floppydisc) to see only the infrared pattern - the same camera at the same position without an infrared filter to see the RGB-image Than the model is made from the images with pattern projection and for the Texture the RGB-images are used. For an advanced system see the paper: http://www.ifp.uni-stuttgart.de/publications/2011/2011_Wenzel_Berlin.pdf Karsten |
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| Author: | virtumake [ Wed Jul 17, 2013 8:29 pm ] |
| Post subject: | Re: using a primesense as projector in photogrammetry |
That's a cool idea. Have you tried it? I was thinking of projecting a scattered laser beam to help reconstructing the model. |
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| Author: | kiesel [ Thu Jul 18, 2013 7:58 am ] |
| Post subject: | Re: using a primesense as projector in photogrammetry |
Pattern projection in photogrammetry works very well and the pattern projection of the primesense sensors is optimised for exactly this. By myself I have successfully tested pattern projection with my old slide projector. Unfortunately the handling in PhotoScan with these images is a little inconvenient (moving and renaming of images). There are many feature requests to simplify this to Agisoft btw.. In Scanner Killer it is a normal workflow, but the stand alone pro version,which is not restricted to a limited polygonsize, is expensive (12.000 $). Karsten |
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| Author: | jamescmc [ Fri Feb 28, 2014 6:45 am ] |
| Post subject: | Re: using a primesense as projector in photogrammetry |
It is great. The image method of filter design determines the properties of filter sections by calculating the properties they have in an infinite chain of such sections. |
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