[fitsbits] Question(s) regarding development of proprietary FITS manipulation software. . .

[Mark Calabretta]

On Thu 2007/09/20 14:05:17 +1000, Mark Calabretta wrote
in a message to: Maren Purves <m.purves at jach.hawaii.edu>
and copied to: gberz3 <gberz3 at gmail.com>, fitsbits at donar.cv.nrao.edu

>after all they should contain all of the colour information.  Just
>multiply the spectra by the CIE 1931 colour-matching functions to
>get colourimetric RGB or XYZ-tristimulus values.  These would then

...that is, multiply the spectrum in turn by each of the CIE 1931
R, G, B (or X, Y, Z) colour-matching functions and integrate to get
an (R,G,B) or (X,Y,Z) triple for each spectrum.  This is the spectrum's
colour in a colourimetric colour-space.  Do this for each pixel to get
a colourimetrically accurate colour image.  Convert each triple to sRGB
via a simple linear transformation (matrix multiply) for display on an
LCD.

Cheers, Mark