2D to 3D
Sorry if this is a naive question but I'm in the process of doing 2D to stereoscopy conversion tests and I wanted advice on the best method possible on a home PC. My intended purpose is not youtube or a home viewing environment, but a cinema screen.
After some research, I've found some ideas: 1. Change the perspective on the image frame and get two L and R versions. 2. Use the displace filter in photoshop/after effects to get L and R 3. Rotoscope out the foreground painstakingly for each frame (with Mocha in After effects?) and then create the L and R images. But how? Couldn't find a tutorial online. 4. Use avisynth and virtualdub. But I have no idea where to start or whether it can be accurate because each shot is different, right? Even though I have tested a few of the above with anaglyph at home, it's impossible to judge the best option for screen. Where would a good place to start be? Tried google and the above is all I got. Thanks. |
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More importantly, shooting for 3D is different from shooting for 2D. Not just by using two cameras but composing everything differently. If it was shot in 2D, it should stay in 2D. If it should be in 3D, it should be shot in 3D. Otherwise it is like trying to convert a painting into a statue. |
While I like Adam's comparison of converting a painting into a statue, Sareesh is probably thinking along the lines of how a TV can convert 2D into "3D" on the fly. There are cues in a conventional image for creating "3D" but I have no idea what program exists to do this and the result would certainly not compare to shooting in stereo in the first place as Adam suggested. It would be interesting to know how companies do the process with their TVs however, maybe someone can explain it. And I agree with Adam that it is pointless for a cinema release as Sareesh has planned.
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I have done a lot of research into 2D to 3D conversion because every once in a while we receive shots that just cannot be saved. I loath it but it is sometimes a necessary evil.
There are many different methods out there:
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Tim, I would have bought the stereo3D plug-in a long time ago except it only works on macs.
I think a combination of roto and depth maps should be quite sufficient. But it's tedious. |
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I have been roughly modelling scenes (static fixed camera scened mostly) to create depth map and rotoscoping the foreground non static objects. I have also found the if you create a roto solid and use gradient tools on the roto you can dramaticaly reduce the flat looking 3D and if you use the gradient of the floor cieling or nearby object you can adjust your rotoscoped solids brightness to position your object properly. I have had quite good success with that and all though tedious as hell it works quite well. Anything that you can do natively though you should do! @Tim Dashwood - Care to give a little more detail on your experimental method always open to new ideas |
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