gemtopnm(1) [minix man page]

gemtopnm(1)                                                   General Commands Manual                                                  gemtopnm(1)

NAME

       gemtopnm - convert a GEM .img file into a portable anymap

SYNOPSIS

       gemtopnm [-d] [gemfile]

DESCRIPTION

       Reads  a  GEM .img file, either the one plane (black/white) or four plane (16 color) varieety, as input.  Reads from stdin if input file is
       omitted.  Produces a PBM or PPM file as output, depending on whether the input is one or four plane.

OPTIONS

       -d     Produce output describing the contents of the .img file.

SEE ALSO

       pbmtogem(1), pnm(5)

AUTHOR

       Copyright (C) 1988 Diomidis D. Spinellis (dds@cc.ic.ac.uk).

                                                                   30 April 2000                                                       gemtopnm(1)

ppmcolormask(1) 					      General Commands Manual						   ppmcolormask(1)

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.)

SEE ALSO

       pgmtoppm(1), pnmcomp(1), pbmmask(1), ppm(5)

AUTHOR

       Bryan Henderson (bryanh@giraffe-data.com)

								   14 April 2000						   ppmcolormask(1)