P3D When is stereo not stereo?

[Marvin Jones <Campfire@xxxxxxxxxxxxxx>]

Message text written by INTERNET:photo-3d@xxxxxxxxxxxxxxxxx
>{Marvin, I don't know if you're merely being argumentative, but clearly
the
guy was asking whether the image in a flat photo that was photographed with
a stereo camera would somehow magically becomes stereoscopic. The answer to
the question he was asking is NOT yes. If I HAD told him yes- as you
suggest- would that be educating him?)<

(Taking my tongue out of my cheek) I'm quite aware of what the question
implied, but I was responding more to the many messages that indicated that
a stereo image of a flat object is by definition NOT STEREO. While there's
not much point in taking a stereo picture of a flat object, it is still
nonetheless stereo. It will locate the flat object in the third dimension,
depth, and may also pick up other objects that do not share the same flat
plain, such as a thumb or tack holding the flat object in place; it might
pick up incongruities on the supposedly "flat" surface; it might even
reveal that the "flat" surface is not "flat" (ie 90 degrees to the camera
axis) at all. A stereo picture needn't have an Indian flinging a tomahawk
at you to be stereo. A stereo image of a flat object does not somehow cease
being "stereo". It's just not very interesting stereo.


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