Thursday, November 18, 2010 C3DV - Tech Tests Update: CGI 3D to Anaglyph 3D

At long last, we've seen some 3d modeling conversion tests. And they look promising. As the requirements of the C3DV project call for mixing live action and animation in the same scenes, we decided early on to incorporate 3d modeling programs for the CGI material. Contributors to the project would be working in a variety of software programs--3D Studio Max, Maya, Poser, iClone, Blender, etc.--and the feeling was that we should do tests in each of these. The test were to prove that our theory of converting 3d modeling imagery to anaglyph 3d would work. And they did. You can see some early results below. The basic requirement for these artists was to emulate the double lensed camera approach to shooting live action 3d for anaglyph. To do that, each artist working on a test created two simultaneous (left and right) camera views in their program, with each virtual camera approximately 2.5 inches apart, just as w/the live action cameras (note: some programs offer far more specific control of camera placement than others). Then the outputted virtual camera files were sent off and processed for red and blue layering/blending in Final Cut in the same way as the live action footage. As we had hoped, the effect was exactly the same for both live action and CGI created imagery. The tests are extremely short and some are more effective than others, but you should be able to see an early, somewhat crude, working example of this technique in each of these. If you have any suggestions, or want to submit a test in another software, please feel free.

Poser by Sean Bryan at HCCI Computer Clubhouse, NY

3D Studio Max by Leontyne Robinson at the Harland Boys and Girls Club Computer Clubhouse, GA

iClone by Freedom Reign at Eden Youth and Family Center Computer Clubhouse, CA

Leave your comment 3 comments:

Chris G. said...

These all look great. It's nice to get confirmation that it'll work. I was just wondering what could be causing the red/blue separation that happens on the iClone test at the end (the last video). It seems related to the camera moving, as the camera plans closer the separation of the dancer gets closer, and then starts to get further apart? Any theories about why?

Fred Riedel said...

Freedom says (re the iClone test): "Hey Fred, I parented the two seperate cameras to an invisable object and then just animated the object, not a very percise method so I'm not suprised there was some error. I just got a plug-in that makes for much more effective stereo-rendering. I'm working on the test now..."

Also, here's some interesting advice about an effective way to compose for a stronger 3D effect:

Don’t Break the Stereo Window

We discussed briefly how the display screen represents a window and objects can be behind, at or in front of the window. If you want an object to appear in front of the window it cannot touch the edge of the frame. If it does the viewer’s brain won’t understand how the parallax is suggesting the object is in front of the screen, but at the same time it is being occluded by the edge of the screen. When this contradiction happens it is referred to as a window violation and it should be avoided. Professional stereographers have a few tricks for fixing window violations with lighting or soft masks but it is best for beginners to simply obey this rule.

Anonymous said...

wonderfull :D

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