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rledither - Floyd Steinberg dither an image to the given colors.
rledither
[ -e edge_factor ] [ -l nchan length ] -{tf} mapfile [ -o outfile ] [ infile
]
This program accepts an RLE(5)
file and a file of colormap
entries, and dithers the image to those colors. Edge enhancement is also
performed, if specified.
- -e edge_factor
- An edge_factor of zero means
no edge enhancement (the default). A value of 1.0 looks pretty good for
most images.
- -l nchan length
- Specifies the number of channels in the colormap,
and the number of entries in each channel. The default is 3 channels of
256 entries, which is appropriate for an eight bit color display.
- -{tf}
mapfile
- The mapfile must contain at least nchan*length values in the range
0 to 255. The -t flag causes mapfile to be read as R G B R G B R G B... The
-f flag implies the entries are listed as R R R... G G G... B B B...
- -o outfile
- If
specified, the output will be written to this file. If outfile is "-",
or if it is not specified, the output will be written to the standard output
stream.
- infile
- The input will be read from this file. If infile is "-" or
is not specified, the input will be read from the standard input stream.
mcut(1)
, rlehdr(1)
, rlequant(1)
, urt(1)
, RLE(5)
.
Rod G. Bogart,
University of Michigan
It should read colormaps from RLE files, too.
For the moment, edit the output from rlehdr -m.
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