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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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