P3D Re: PHOTO-3D digest 3005

[Bob_Maxey@xxxxxxxxxxxx]

>>The problem with "window violation"; that is, when an object appears to
come through, yet at the same time be "cut off" by the stereo window, is
that it causes a depth-cue conflict.  The depth cue produced by
binocular disparity indicates to our perception that the object should
be projecting in front of the apparent position of the window in
3-space.  However, the cue of occlusion suggests that since the object
is being obscured by the window boundary, it must therefore be behind
the window.  The brain tries to reconcile these clashing cues, and what
usually results is the collapse of the 3D illusion for the object in
question, and possibly for the image as a whole depending on how much of
the image the violating object represents.  Thus this situation is
considered best generally avoided. :-)

Yup, and this I too, avoid. I remember some photographs I took of a vintage
fighter plane, and this very thing happened. Exposure was perfect, flash
fill was grand, sharpness was exceptional, but the photographs were useless
because of this problem.

RM



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