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Man Pages


Manual Reference Pages  -  RLEPATCH (1)

NAME

rlepatch - patch smaller RLE files over a larger image.

CONTENTS

Synopsis
Description
Options
See Also
Author
Bugs

SYNOPSIS

rlepatch [ -o outfile ] infile patchfiles...

DESCRIPTION

Rlepatch puts smaller RLE files on top of a larger RLE image. One use for rlepatch is to place small "fix" images on top of a larger image that took a long time to compute. Along with repos(1), rlepatch can also be used as a simple way to build image mosaics.

Unlike rlecomp(1), rlepatch does not perform any arithmetic on the pixels. If the patch images overlap, the patches specified last cover those specified first.

If the input files each contain multiple images, they are treated as streams of images merging to form a stream of output images. I.e., the nth image in each input file becomes part of the nth image in the output file. The process ceases as soon as any input file reaches its end.

OPTIONS

infile The background image will be read from this file. If input is to be taken from stdin, "-" must be specified here.
-o outfile
  If specified, output will be written to this file, otherwise it will go to stdout.

SEE ALSO

rlecomp(1), crop(1), repos(1), urt(1), RLE(5).

AUTHOR

John W. Peterson, University of Utah.

BUGS

Rlepatch uses the "row" interface to the RLE library. It would run much faster using the "raw" interface, particularly for placing small patches over a large image. Even fixing it to work like rlecomp (which uses "raw" mode only for non-overlapping images) would make a major improvement.
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1 RLEPATCH (1) Nov 8, 1987

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