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Man Pages


Manual Reference Pages  -  APPLYMAP (1)

NAME

applymap - Apply the color map in an RLE file to the pixel data

CONTENTS

Synopsis
Description
Options
See Also
Author
Bugs

SYNOPSIS

applymap [ -l ] [ -o outfile ] [ infile ]

DESCRIPTION

This program takes the color map in an RLE(5) file and modifies the pixel values by applying the color map to them. If there is more than one color channel in the input file, the color map in the input file should have the same number of channels. If the input file has a single color channel, the output file will have the same number of color channels as the color map.

Each pixel in the input file is mapped as follows: For a multi-channel input file, a pixel in channel i is mapped as map[i][pixel] >> 8, producing a pixel in output channel i. The right shift takes the 16 bit color map value to an 8 bit pixel value. For a single channel input file, to produce a pixel in output channel i is produced from the corresponding input pixel value as map[i][pixel] >> 8.

OPTIONS

-l This option will cause a linear (identity) color map to be loaded into the output file. Otherwise, the output file will have no color map.
infile The input will be read from this file, otherwise, input will be taken from stdin.
-o outfile
  If specified, output will be written to this file, otherwise it will go to stdout.

SEE ALSO

rleldmap(1), urt(1), RLE(5).

AUTHOR

Spencer W. Thomas, University of Utah

BUGS

If the image data and color map channels in the input file do not conform to the restriction stated above (N->N or 1->N) the program will most likely core dump.
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1 APPLYMAP (1) Nov 12, 1986

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