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ppmcolormask - Online in the Cloud

Run ppmcolormask in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command ppmcolormask that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


ppmcolormask - produce mask of areas of a certain color in a PPM file

SYNOPSIS


ppmcolormask color [ppmfile]

DESCRIPTION


Reads a PPM file as input. Produces a PBM (bitmap) file as output. The output file is
the same dimensions as the input file and is black in all places where the input file is
the color color, and white everywhere else.

The output of ppmcolormask is useful as an alpha mask input to pnmcomp. Note that you can
generate such an alpha mask automatically as you convert to PNG format with pnmtopng(1).
Use its -transparent option.

ppmfile is the input file. If you don't specify ppmfile, the input is from Standard
Input.

The output goes to Standard Output.

You can specify color five ways:

o An X11-style color name (e.g. black).

o An X11-style hexadecimal specifier: rgb:r/g/b, where r g and b are each 1- to
4-digit hexadecimal numbers.

o An X11-style decimal specifier: rgbi:r/g/b, where r g and b are floating point
numbers between 0 and 1.

o For backwards compatibility, an old-X11-style hexadecimal number: #rgb, #rrggbb,
#rrrgggbbb, or #rrrrggggbbbb.

o For backwards compatibility, a triplet of numbers separated by commas: r,g,b, where
r g and b are floating point numbers between 0 and 1. (This style was added before
MIT came up with the similar rgbi style.)

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