ppmtoneo(1) General Commands Manual ppmtoneo(1)NAME
ppmtoneo - convert a portable pixmap into an Atari Neochrome .neo file
Reads a portable pixmap as input. Produces an Atari Neochrome .neo file as output.
SEE ALSO neotoppm(1), ppm(5)AUTHOR
Copyright (C) 2001 by Teemu Hukkanen <firstname.lastname@example.org>, based on ppmtopi1 by Steve Belczyk (email@example.com) and Jef Poskanzer.
24 April 2001 ppmtoneo(1)
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ppmtopgm(1) General Commands Manual ppmtopgm(1)NAME
ppmtopgm - convert a portable pixmap into a portable graymap
Reads a portable pixmap as input. Produces a portable graymap as output. The output is a "black and white" rendering of the original
image, as in a black and white photograph. The quantization formula used is .299 r + .587 g + .114 b.
Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any ppm program can
read pgm (and pbm ) files automatically. pgmtoppm is for colorizing a pgm file. Also, see ppmtorgb3 for a different way of converting
color to gray. And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate the original
colors, not necessarily a way that looks like a black and white photograph.
Cold-hearted orb that rules the night
Removes the colors from our sight
Red is gray, and yellow white
But we decide which is right
And which is a quantization error.
SEE ALSO pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)AUTHOR
Copyright (C) 1989 by Jef Poskanzer.
10 April 2000 ppmtopgm(1)
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