P3D Interesting visual phenomenon

[Ole Hansen <oha@xxxxxxxxxx>]

Greg Wageman - gjw@xxxxxxxxxx - wrote:
> Here I am sitting at my computer with a pair of red/blue glasses....
You should use red/cyan filters for two reasons:
1. anaglyphs on the net are red/cyan.
2. red/cyan are complementary colors, and therefore gives the best
   colorbalance (minimum tint) and minimum ghosting.

> I closed one of my eyes, and to my great surprise noticed a VERY
> obvious tint to the once-white screen....
This is normal for the human eye(s), and is the result of:
- Color fatique. The sensitivity of the eye to a certain color
  decreases as the intensity of the color increases. As it is a
  chemical/neurological proces in the retina it takes some time,
  and the readjustment to normal colorsight takes some time to.
  In this period you will see the complementary color.
- Color accomodation. The eye will adjust to the colortemperature
  of the lightsource, and this will be percepted as white after some
  time. Blonde girls in candlelight are not seen as redhaired, but
  look at the your daylight color slides from that splendid evening ;-)


George A. Themelis - fj834@xxxxxxxxxxxxxxxxxxxxx - wrote:
> Someone suggested trying to see anaglyph images without glasses by
> having the eyes adjusted to the complimentary colors first. We tried
> it and it did not work.....
The readjustment proces starts in the moment you take off the glasses,
and to see anaglyphs you need a steady colorperception, and the proper
filtercolors.

By the way. I am still looking for a supplyer who can supply glasses
(cardboard) with the right red and cyan filters to match the red and
cyan of a modern SVGA/XGA monitor. All advice is appreciated.
regards - Ole Hansen - olehansen@xxxxxx com


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