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Old 2nd November 2003, 14:22   #6  |  Link
waka
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Join Date: Jul 2002
Posts: 29
Interesting project.

Don't know why I didn't think of using rgbadjust, certainly makes more sense.
If the artifacts that subtract sometimes has bothers you, try:

Code:
R=crop(x,0,0,-3,0).pointresize(breite*6,hoehe).
     \pointresize(breite,hoehe).RGBadjust(1,0,0,1)

G=crop(x,1,0,-2,0).pointresize(breite*6,hoehe).
     \pointresize(breite,hoehe).RGBadjust(0,1,0,1)

B=crop(x,2,0,-1,0).pointresize(breite*6,hoehe).
     \pointresize(breite,hoehe).RGBadjust(0,0,1,1)

layer(r,g,"fast").layer(b,"add",85).rgbadjust(3,3,3,1)
Thats quite close to the subtract version, with a little tweaking of the final rgbadjust you might get a good match.

Edit: I suppose it is a trade off between subtract artifacts and the quantisation issues as you said.

Last edited by waka; 2nd November 2003 at 14:34.
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