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Interesting way to get a depth map with a reflex camera

category: general [glöplog]
 
With a tripod and a reflex you can take a lot of photos of a scene with different focus positions. By picking the most focused points from all the photos, you can generate a depth map.

I've find very few information about this in internet, just one paper, but it looks it works good. I think I'm going to try today. I will share results and/or dataset if you want.
added on the 2010-07-10 12:50:04 by texel texel
cool idea. keep us posted!
added on the 2010-07-10 12:53:59 by skrebbel skrebbel
hmm... might work, but I suspect it will be hard to get very accurate..
I've tried with that before, but to get half decent results you'll need a very shallow DOF. f/1.2? :)
I've only tried it with a compacta camera, with an obviously wide dof. I should try with a friends Nikon 50mm f/1.2.
I've used something called jimage or imagej, with a plugin.
added on the 2010-07-10 12:57:35 by xernobyl xernobyl
yep please show
I've started every sentence with «I've», so I'll just continue.
I've found the plugin: http://bigwww.epfl.ch/demo/edf/index.html (not really sure it was that)
added on the 2010-07-10 13:01:02 by xernobyl xernobyl
My very first dataset so we can play: http://www.romancortes.com/ficheros/dataset1.rar

I will try to do another later, with less shacking of the camera, a more interesting scene and more shots
added on the 2010-07-10 13:21:26 by texel texel
Texel, can provide the ratio of f between the first and last image in the sequence? (I will assume a linear change in between.)
I have no idea Optanes, but I tried to do it linear, of course.
added on the 2010-07-10 15:13:44 by texel texel
Have you tried looking at the EXIF?
added on the 2010-07-10 17:43:28 by xernobyl xernobyl
Can it be put in a sequence of linked tables for C64? ;)
added on the 2010-07-10 21:57:26 by Photon Photon
http://www.raytrix.de/index.php/home.181.html
added on the 2010-07-11 12:41:20 by xeNusion xeNusion

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