Re: Retinal rivalry in 3Discover images - repair possible

[P3D Larry Berlin <lberlin@xxxxxxxxx>]

>Date: Tue, 28 Jan 1997 02:10:56 -0500 (EST)
>From: P3D  Paul Talbot writes:
>...............
>Bob Wier describes tweaking mismatched stereo pairs and comments:
>> This sort of adjustment is not
>> difficult once you get over the learning curve in Photoshop or some
>> similar image manipulation program.
>
>How feasible is this with today's technology if the output media is
>35mm film, and a constraint is no more loss of image quality than would
>occur with a film-to-film dupe?

******  The resolution issues have been mentioned several times in the
recent past.

>
>I can see where the fix would be fairly easy in the case Bob describes, and
>probably also in the case of the two people moving at different rates
>of speed across the ground.  But what about the waves lapping at the
>shore of the island in the picture of the Statue of Liberty?  What
>sort of techniques would be applied there?  Copy the waves from one
>image to the other and ignore any perspective shift because they are
>so distant?  What about something not so distant that is mismatched?
>Does this then get into the sort of painstaking work done by Lincoln
>Kamm and others...manually modifying the copied part of the image to
>simulate the proper perspective shift?

*******  It just so happens that matching up the water is easy because it
*lives* on a known plane in the image. Unless you are very close, the waves
are more of a texture than a structure with visible depth. To fix the water,
you select portions of the water from one image, feather the edges and bring
it across to the other side. Now it doesn't match correctly so you *skew* it
just enough until it does match the existing plane of the water. Repeat with
manageable and overlapping areas until you are done. :-)

Larry Berlin

Email: lberlin@xxxxxxxxx
http://www.sonic.net/~lberlin/
http://3dzine.simplenet.com/


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