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pal2rgb - convert a palette color TIFF
image
to a full color image
pal2rgb [ options ] input.tif output.tif
Pal2rgb
converts a palette color TIFF
image to a full color image by applying the
colormap of the palette image to each sample to generate a full color RGB
image.
Options that affect the interpretation of input data are:
- -C
- This option overrides the default behaviour of pal2rgb in determining
whether or not colormap entries contain 16-bit or 8-bit values. By default
the colormap is inspected and if no colormap entry greater than 255 is
found, the colormap is assumed to have only 8-bit values; otherwise 16-bit
values (as required by the TIFF
specification) are assumed. The -C option
can be used to explicitly specify the number of bits for colormap entries:
-C 8 for 8-bit values, -C 16 for 16-bit values.
Options that affect the output
file format are:
- -p
- Explicitly select the planar configuration used in organizing
data samples in the output image: -p contig for samples packed contiguously,
and -p separate for samples stored separately. By default samples are packed.
- -c
- Use the specific compression algorithm to encoded image data in the output
file: -c packbits for Macintosh Packbits, -c lzw for Lempel-Ziv & Welch, -c
zip for Deflate, -c none for no compression. If no compression-related option
is specified, the input file’s compression algorithm is used.
- -r
- Explicitly
specify the number of rows in each strip of the output file. If the -r option
is not specified, a number is selected such that each output strip has
approximately 8 kilobytes of data in it.
Only 8-bit images are handled.
tiffinfo(1)
, tiffcp(1)
, tiffmedian(1)
, libtiff(3)
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