GIFCLRMP(1) GIFLIB Documentation GIFCLRMP(1)

NAME

gifclrmp - extract colormaps from GIF images

SYNOPSIS

gifclrmp [-v] [-s] [-l mapfile] [-t trans] [-g gamma] [-i image] [-h]
[gif-file]

DESCRIPTION

A program to modify GIF image colormaps. Any local colormap in a GIF
file can be modified at a time, or the global screen one.

OPTIONS

-v
Verbose mode (show progress). Enables printout of running scan
lines.

-s
Select the global screen color map.

-l mapfile
Load color map from this file instead of selected color map.

-t trans
Change color index values. The change is made to both the
selected color table and the raster bits of the selected image. A
translation file is a list of pairs of `before' and `after' index
values. At present, the `before' index values must be in
ascending order starting from 0.

-g gamma
Apply gamma correction to selected color map.

-i image
Select the color map of the numbered image.

-h
Print one command line help, similar to Usage above.

If no GIF file is given, gifclip will try to read a GIF file from
stdin.

NOTES

+o The default operation is to dump out the selected color map in
text format.

+o The file to load/dump is simply one color map entry per line.
Each such entry line has four integers: "ColorIndex Red Green
Blue", where color index is in ascending order starting from 1.

AUTHOR

Gershon Elber.

GIFLIB 2 May 2012 GIFCLRMP(1)