colorquant
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Name
colorquant - qolor quantization and rgb to pseudocolor
conversion
Syntax
colorquant [<option>...] <inimage> <colorfile> <outimage>
Description
Performs color quantization of inimage. An outimage and
a corresponding colorfile are produced.
The colorfile is either a BIFF colortable file or an ascii
colormap file (depending on options used). The values in
outimage should be used as indices to the
colortable/colormap.
If inimage is a true-color image (three bands), then
outimage will be the pseudocolor version of inimage.
If colorfile is an ascii colormap file and inimage is
true-color, the map-table may be transformed into a colortable
by mct.
Options
-
-b start
- Lowest color in output map. Default zero.
-
-s step
- Step between each color. Default one.
-
-e stop
- Highest color in output map. Default 255.
-
-c
- Produce BIFF colortable file instead of ascii map-file.
This is only allowed if inimage is a three-band image,
regarded as a true color image.
-
-ct title
- Title for colortable in colorfile. Default: Title in
inimage.
-
-t title
- Title for image in outimage. Default: Title in inimage.
-
-verbose
- Print info
-esc
Don't use escape codes when printing to xterm on verbose.
See also
makepseudo(1), mct(1), color2ascii(1), xshow(1)
Reference
Otto Milvang: An adaptive algorithm for color quantization.
Proceedings of the 5th Scandinavian Conference on Image
Analysis.
Author
Otto Milvang
Revised
Svein Bøe
Examples
colorquant -b 10 -e 253 rgb.img m.map pseudo.img
mct m.map m.col
xshow -ct 256 m.col pseudo.img
colorquant -b 10 -s 2 -e 253 -c rgb.img m.col pseudo.img
xshow m.col pseudo.img
Id
$Id: colorquant.c,v 1.43 1997/04/15 10:02:29 svein Exp $