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P3D Re: Windows


  • From: "Greg Wageman" <gjw@xxxxxxxxxx>
  • Subject: P3D Re: Windows
  • Date: Mon, 26 Jul 1999 09:45:36 -0700


From: Dr. George A. Themelis <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>


>I see the window as frame of reference.  For the lenticular or an
>anglyph, this is the border of the picture.  Think of the anaglyph
>for a second.  Doesn't the border define the window?  Also, when you
>overlap the edges of a slide mask on the screen during projection
>what do you get?  A black frame.  It is not stereoscopic.

The edge of an anaglyph or lenticular stereogram has some of the
properties of a binocular mask, but not all.  Don't you agree that the
slide mask, during project, doesn't HAVE to be overlapped?  And that
when it isn't, that it ALSO has depth and will appear to float in space
somewhere off the screen?

Also, if the corresponding sides of the left and right masks are cut at
different angles (not vertical), then the window ITSELF will appear to
have a depth that varies as you move along its height.

Neither of these phenomena are possible with a monocular border.

(Perhaps I'm merely stating the very, very obvious.  But I don't believe
I've seen this discussed here before, at least not in these terms.)

     -Greg W. (gjw@xxxxxxxxxx)



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