"Edward C." wrote:

> Looking through the source for a formula to convert RGB values to grey
> values, I've discovered a number of slightly different formulas, none of
> which will convert RGB <1,1,1> to a grey value of 1.  Perhaps there is some
> good reason for this, perhaps not, but either way, does someone have a
> formula that will convert in this manner?
>
> Thought:  Perhaps a standard conversion function could be implimented in a
> future version of POV and replace all those ugly and different formulas in
> the code.

Have you checked Poynton's color FAQ?

http://www.inforamp.net/~poynton/ColorFAQ.html

--
"My new computer's got the clocks, it rocks
But it was obsolete before I opened the box" - W.A.Y.

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