P3D Re: Anaglyph colors

[Tom Hubin <thubin@xxxxxxxxx>]

Piero Paravidino wrote:
> 
> I'm experimenting in creating anaglyphs (in grey scale) with Paint Shop Pro
> and I'm having a problem with the colors of the resulting image: the problem
> is that, through the red lens, the blue color (in both video and prints)
> doesn't appear totally black, but just dark grey, so were there are blue
> spots on black background I can see some particulars of both the images from
> the pair. To eliminate this I have to cut the green channel from the
> anaglyph, but it turns to an ugly "magenta and white".
> Can it be a problem with the color of the lens? Is there a way to
> "calibrate" the computer colors on the lenses colors?
> Thanks to anyone who can help.
> 
> Piero Paravidino
> pieroprv@xxxxxx
> ***
> Mesmerize Page Of Wonder: http://welcome.to/mesmerize
> Leggete IT: http://www.fabula.it/IT
> ***

Hello Piero,

First the lenses must be complimentary. If you fold the viewing glasses
in half and look through both lenses you should see nothing. What one
lens passes the other must reject. 

Second, create an array of colors on your screen. Pick out a color that
turns black when viewed through the left lens. That is a color that can
be used for the right view. Pick out a color that turns black when
viewed through the right lens. That is a color that can be used for the
left view. 

The printer colors will likely not be identical to the screen colors.
You may have to print an array of colors to decide which ones to use
when printing an anaglyph. 

Printers and monitors vary considerably. You may have to choose
different colors on different monitors and printers.

Tom Hubin
thubin@xxxxxxxxx



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