On Sat, 1 Mar 2003 11:01:42 +0000
kav### [at] delete_thisfocalimagecom (Kaveh) wrote:

> I want the old image to be shown in the original wavelength colour,
> and the new one in the colour of the new wavelength, as closely as
> practical. So for each wavelength there would be a value in a lookup
> table for the RGB to use.
> 
> When we use a large number of wavelengths, as in white light, I want
> to see a more or less continuous spectrum of light, with each spectral
> image in its correct position.

  Check CIE.inc conained on my lightsys package (Ive posted the URL on
a previous reply). It has some macros to convert wavelength to several
RGB color systems, based on the CIE XYZ color space tranformations. Ive
done all this job alone, as a replacement for my lightsys color macros,
which used a poor aproximation at first based on Dan Bruton algorithm.

  Using CIE.inc, you sould be done with the Wavelength(W) macro, where
W is the wavelength in nm.( the default color system is sRGB). Have fun!

-- 
Jaime Vives Piqueres
		
La Persistencia de la Ignorancia
http://www.ignorancia.org

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