2006.09.27 13:31 "[Tiff] Horizontal prediction for 16bit data", by Joris Van Damme

2006.10.07 02:02 "Re: [Tiff] Inverting color space values in a TIFF file", by Graeme Gill

Can you refer me to a source of documentation on LAB for my future study? I'd at least like to understand it better.

If you take a look in the icclib source (http://www.argyllcms.com/icclibsrc.html), you'll find the functions icmLab2XYZ() and icmXYZ2Lab(), that pretty straight forwardly implement L*a*b* conversions. If you're not familiar with color science to some degree though, this won't take you far, since the next set of questions will be about how to convert to/from XYZ, and what the white point is :-)

Graeme Gill.