P3D Re: R: P3D Re: Anaglyph colors

[Tom Hubin <thubin@xxxxxxxxx>]

Piero Paravidino wrote:
> 
> >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.
> 
> OK, it seems they are, I can only see light bulbs through them.
> 
> >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 point is that I use RGB channels splitting / combining method with Paint
> Shop Pro or some other program: this doesn't let you choose which colours;
> it uses "pure" red for one view and "pure" blue+green for the other. I've
> tried also with 3D Stereo Image Factory, and it's the same.
> Is there another method to combine the two views choosing the colours to
> use?
> 
> Piero Paravidino
> pieroprv@xxxxxx
> ***
> Mesmerize Page Of Wonder: http://welcome.to/mesmerize
> Leggete IT: http://www.fabula.it/IT
> ***

Hello Piero,

I suspect that green is the problem. Why not pure red and pure blue and
no green? Does that leave the red too dark?

Anyway, if you cannot change the screen or printer colors you will have
to change your viewing lens colors. You will need to find a right lens
color that blocks the left view and passes enough of the the right view.
And a left lens color that blocks the right view and passes enough of
the left view.

The scientific approach is to determine the spectrum of each of the
screen or printer colors. The right and left spectra must not overlap
with any significant intensity. Then look at the pass band for filters
and select filters for viewing lenses that reject one spectrum while
passing the other. The monitor and printer are not easily done without
an optical laboratory. So you may just have to try lots of monitors,
printers and viewing glasses until you get lucky and find a combination
that is satisfactory.

Tom Hubin
thubin@xxxxxxxxx


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