P3D Re: The 3-DVG Effect

[Peter Homer <P.J.Homer@xxxxxxxxxxxxx>]

Since my last post on this subject I have rememberd that I do have a pair
of glasses similar to those supplied by Chromadepth but they are called
Chromatek.
They came with a box of felt pens called "Jumping Colours" intended for
children the glasses enables their drawings to lift of the paper.
Unfortuneately it is the blues and greens which come to the foreground
which is wrong for drawings which are going to have blue for the sky in the
distance. I tried examining them  under a microscope and they seem to
consist of micro-prisms rather than a diifraction grating of alternate
clear and opaque strips .Also there is a sound produced on one side if you
draw a finger nail across them. So perhaps a diffraction grating would
produce a more correct depth illusion perhaps this type of simulated stereo
is more like a real scene where the distant objects have less seperation
not more.     P.J.Homer



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