Re: PHOTO-3D digest 2113

[P3D Gregory J. Wageman <gjw@xxxxxxxxxx>]

Ray Zone explains:

>This issue is deceptive.  Things aren't what they appear. The image encoded
>RED on the computer (with software such as Photoshop) appears to the naked
>eye on the computer monitor as BLUE (or Blue/Green).  The image encoded
>BLUE/GREEN appears to be RED.  This is precisely the reverse of Subtractive
>Filtration.  It's confusing but the RED information on the computer appears
>to be BLUE/GREEN precisely because Additive Filtration is at work (as
>opposed to Subtractive Filtration where the pigment primaries appear to the
>eye as they are).

Ray, you've obviously gone at least two steps beyond what I was trying
to explain.  I was simply describing the filtering function of the
glasses, without considering how the image was encoded.  Of course to
describe the entire system, that must be considered.

>Now, are you totally confused?

Yes, but that has nothing to do with you! :-)

	-Greg W.


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