Table of Contents

Name

rledither - Floyd Steinberg dither an image to the given colors.

Synopsis

rledither [ -e edge_factor ] [ -l nchan length ] -{tf} mapfile [ -o outfile ] [ infile ]

Description

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.

Options

-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.

See Also

mcut(1) , rlehdr(1) , rlequant(1) , urt(1) , RLE(5) .

Author

Rod G. Bogart, University of Michigan

Bugs

It should read colormaps from RLE files, too. For the moment, edit the output from rlehdr -m.


Table of Contents