[comp.graphics] RBG -> Gray Scale?

sbw@naucse.UUCP (Steve Wampler) (01/29/88)

A while ago numerous people posted the equation for converting
RGB values to gray scale.  In my infinite wisdom, I didn't save
the equation, nor a reference to where it could be found.  Of
course, I now could use either.  Would someone please be so
kind as to Email me either?  Thanks!
-- 
	Steve Wampler
	{....!arizona!naucse!sbw}

tada@athena.mit.edu (Ivan Tadayoff) (01/29/88)

B&W TV's (and at least one graphics computer) use I = 0.30R + 0.59G +
0.11B where I = intensity and R,G,B = intensity or RGB color.  The
gray to RGB conversion is (of course) R=I, G=I, B=I.