Re: Anaglyph

[P3D Bob Wier <wier@xxxxxxxxxxxxxxx>]

|I ran into this (l/r colour reversal) while making some anaglyph
|constructions in Autocad. I worked out very carefully what colours
|the left and right images should be and yet still found I had to
|reverse the glasses.
|
|It wasn't until later that I realised that this was because I use
|a dark background in my Autocad setup.
|
|    ... Sid (sid@xxxxxxxxxx)

Same thing for me with Photoshop - I tried all sorts of combinations
of black background and white backgrounds, and also just dropping
the images into [R or B (of RGB)] and [R or (G and B)] - I generally
found that the if you just used R and B with a black G, you got very
dark images (like the Will Rogers image). It seems to work better
for me to drop one side into R and the other into G+B (yielding Cyan)
which gives a white pixel where equal intensity shades are present (
such as in my "Baltimore Street Scene" in the ftp area). I also tried
doing simiar things with CYMK but found it difficult to visulize what
kind of results I'd be getting (just like in subtractive color photo
enlargment). I guess I'm a creature of RGB habit :-)

These are of course for gray scale views - I've not experimented
much with color photos...

   ====== wier@xxxxxxxxxxxxxxx ======
  5:13 PM Friday, June 13, 1997
   keeper of the Photo-3d, Overland-Trails, LDS State
    Research Outline Guides and other stuff
     (currently in Ouray, Colorado)



------------------------------