|pix-bw [-ntsc] [-crt] [-R [num]] [-G [num]] [-B [num]] [in.pix] > out.bw|
Pix-bw will combine or select the color planes of a pix(5) format file from its standard input and produce a black and white bw(5) file on its standard output. By default all three colors are weighted equally. The -ntsc uses weighting based on the NTSC primaries and the D6500 alignment white. The -crt flag applies weights for "typical" CRT phosphor chromaticities and the D6500 white.
Individual color plane(s) can be selected via the -R -G and -B flags. If one or more of these flags is followed by a value, the value will be treated as a weight to be applied to that color This value is implicitly 1.0 divided by the number of colors selected for the flags which are not followed by a value.
pix-bw -R -B < file.pix > file.bw will equally blend the red and blue color planes.
pix-bw -R0.30 -G0.59 -B0.11 < file.pix > file.bw has the same effect as the -ntsc flag. [The -crt weights are: 0.26, 0.66, 0.08]
brlcad(1), pix-bw3(1), bw-pix(1), pix(5), bw(5).
This software is Copyright (c) 1989-2013 by the United States Government as represented by U.S. Army Research Laboratory.
Reports of bugs or problems should be submitted via electronic mail to <email@example.com>.