Re: Here we go again

[P3D Peter Davis <pdavis@xxxxxxxxxxxxxxxxxx>]

> P3D Gregory J. Wageman wrote:
> 
> > It strikes me that a whole new crop of special effects software would
> > have to be developed for 3D films.  In a conventional flat film, the
> > effect only has to simulate the appearance of a 3D object effectively.
> > 
> > For a stereo film, the effect would have to reproduce not only shading
> > and color but actual depth.  In some cases this would simply mean
> > casting rays from two different viewpoints to obtain your stereo pair,
> > but with other types of effects, entirely new algorithms would be
> > required.
> 
> 
> This to my knowledge turns out to be untrue. The current crop of 
> mainstay 3D modeling software used in television and film (Wavefront, 
> SoftImage, etc) does not merely "shade and color," but models true 
> special relationships in the proper perspective, and thus is more than 
> capable of rendering "true" stereo. The modeler or artist simply 
> "cha-chas" the camera POV to whatever the desired stereo base is, and 
> rerendering the scene(s) for the other "eyeball."

I believe that special effects houses use a whole bag of tricks,
according to the needs of the projects.  Much of the existing
animation software is 3D, and could therefore generate stereo fairly
easily.  However, some effects are done through digital "painting" of
images, or through custom special-purpose software written
specifically for a particular effect.

-pd

--------
Peter Davis                    "Education is not the             617/873-4145
BBN Educational Technologies    filling of a pail, but      FAX: 617/873-2455
70 Fawcett Street               the lighting of a fire."       pdavis@xxxxxxx
Cambridge, MA 02138                     -- W. B. Yeats

        URL:  http://copernicus.bbn.com/people/PDavis/


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