Annotated edit history of
ppmtopgm(1) version 2, including all changes.
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ppmtopgm |
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!!!ppmtopgm |
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NAME |
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SYNOPSIS |
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DESCRIPTION |
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QUOTE |
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SEE ALSO |
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AUTHOR |
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---- |
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!!NAME |
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ppmtopgm - convert a portable pixmap into a portable graymap |
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!!SYNOPSIS |
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__ppmtopgm__ [[''ppmfile''] |
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!!DESCRIPTION |
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Reads a portable pixmap as input. Produces a portable |
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graymap as output. The output is a |
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Note that although there is a __pgmtoppm__ program, it is |
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not necessary for simple conversions from pgm to ppm , |
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because any ppm program can read pgm (and pbm ) files |
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automatically. __pgmtoppm__ is for colorizing a pgm file. |
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Also, see __ppmtorgb3__ for a different way of converting |
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color to gray. And __ppmdist__ generates a grayscale |
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image from a color image, but in a way that makes it easy to |
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differentiate the original colors, not necessarily a way |
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that looks like a black and white photograph. |
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!!QUOTE |
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Cold-hearted orb that rules the night |
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Removes the colors from our sight |
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Red is gray, and yellow white |
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But we decide which is right |
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And which is a quantization error. |
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!!SEE ALSO |
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pgmtoppm(1),ppmtorgb3__(1),__rgb3toppm(1),ppmdist(1),ppm(5),pgm(5) |
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!!AUTHOR |
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Copyright (C) 1989 by Jef Poskanzer. |
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