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Topic: Jumpy spin

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fkelly12054 (7 months ago)
http://photosynth.net/preview/view/1fd65bcb-7f79-48d9-8815-d1f70a1b46a8

Made several efforts at creating a spin today.  The above is the best but it's way too "jumpy" on playback.  We rotated the sculpture, exactly one inch of rotation for each picture.  It really is unusable as is.  The background is a black curtain ... is that consistent enough or does the lighting on it possibly cause problems?  Any suggestions welcome.  There were 22 photos uploaded to create this.  Also, even when you rotate it by hand the image "breaks apart" at times.
NateLawrence (7 months ago)
Yeah, unfortunately the backdrop still has way too many image features in it. 
Photosynth is locking onto all of them and it messes with the reconstruction.

You can see the camera positions by clicking/tapping any photo in the synth and then pressing the [M] key to pull up an overhead map.
Alternately, press the [C] key to toggle to global Camera mode and zoom out to see where Photosynth calculated the camera positions in 3D.

Whereas for a Spin, the camera positions should be roughly along the arc of a circle, here, they're closer to a straight line because of all the common background.

As for the current description of the synth... that's not a man.
PhotosynthTeam (7 months ago)
Our lead developer on the pipeline confirmed that the texture in the not-quite- black curtain is the problem.

If you are prepared to take these images into your favorite photo editor and crunch the darks -- pushing them further to black -- I think you might have success with this one. Please let us know if you try this.
fkelly12054 (7 months ago)
Thank you for getting back to me.  I have a plan to get the background to be a more uniform black that I think will work.  I can always edit it afterwards if it doesn't.  Thanks again for the quick response.
fkelly12054 (7 months ago)
I processed the images in Photoshop as you suggested.  With 30 some odd files that's not quick but you can see the results at:

http://photosynth.net/preview/view/e3639fa8-838c-4a50-8d5c-4a429cf5c0ea

lady with snake.

Obviously it would be better to set the spin up so that the editing isn't needed.  I will experiment some more and write here.  It's obvious from the outset that one approach is to just take a picture of the background by itself and make sure it comes out as a "pure" color before setting up the rotating figure.
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