Mapping RGB to CIE to multiple lines?

[DMills]

Hi all,
Are there any colour scientists here?

I am hacking around on laser colorimetry, and am currently looking for a solution to the problem of producing multi line output given RGB input.

It seems that starting with some assumptions about what wavelengths the RGB is assumed to be, we can produce (non normalised) CIE co ordinates via a couple of interpolated lookup tables, and that given a set of output wavelengths and relative powers we can produce a gamut (That will be a 3d surface representing what we can do for any given brightness level, and there are typically multiple solutions).

The problem comes with mapping the 3 space CIE coordinates onto the gamut(s) as there are typically multiple solutions depending on how you are willing to trade total brightness for ability to retain a constant gamut at varying brightness levels.

At the moment I have multiple Octave models none of which I am really happy with.

The linear algebra I can handle, it is the general approach that is giving me fits.

Does anyone have better references then the sci.engr.color FAQ?

Regards, Dan.

[buffo]

Suggest you contact Casey Stack at Laser Compliance Inc, or else Greg Makhov at Laser Systems Design Inc. Either one would probably enjoy a good color theory discussion, and should be able to assist you with this.

Adam

[mixedgas]

Take a look at ref two at the back of this:

http://www.optics.arizona.edu/opti58...omeTheater.pdf

Then there is this

http://www.optics.arizona.edu/opti58...amut_Laser.pdf

Then this:
http://extranet.spitzinc.com/referen...tion_Deter.pdf

http://www.smpte.org/journal/?p=1880

www.academypublisher.com/ojs/index.php/jmm/article/download/.../1791

[8] J. Y. Zhang, H. F. Lin, S. G. Yang, Multiple regression laser
display color system establishment, Optical Instruments, Vol.
30, (2), 2008. The original JPEG compression standard is efficient at low to medium levels of compression with relatively low levels of loss in visual image quality and has found widespread use in the imaging indust...

J. Imaging Sci. Technol. / Volume 51 / Issue 3 / General Papers

New Set of RGB Primaries for Display Covering Full Range of Real World Object Colors

Journal of Imaging Science and Technology -- May/June 2007 -- Volume 51, Issue 3, pp. 243-(5)


None of the links have the math, unless you obtain the papers, but a few of them have people to contact....

Ok for a start? I might be able to dig up real stuff on Saturday.



What you are looking for will be in siggraph or SMPTE or SPIE some place.
Steve

[DMills]

Some cool stuff, thanks Steve, got a bit of reading to do.....

Regards, Dan.