gifclrmp - extract colormaps from GIF images
[-v] [-s] [-l mapfile] [-t trans]
[-g gamma] [-i image] [-h]
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.
Verbose mode (show progress). Enables printout
of running scan lines.
Select the global screen color map.
Load color map from this file instead of
selected color map.
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
Apply gamma correction to selected color
Select the color map of the numbered
Print one command line help, similar to Usage
If no GIF file is given, gifclip will try to read a GIF file from stdin.
•The default operation is to dump out
the selected color map in text format.
•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.