| 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¶
•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.
AUTHOR¶
Gershon Elber.
| 2 May 2012 | GIFLIB |