PAL2RGB
Section: User Commands (1)
Updated: September 20, 2005
Page Index
NAME
pal2rgb - convert a palette color
TIFF
image to a full color image
SYNOPSIS
pal2rgb
[
options
]
input.tif
output.tif
DESCRIPTION
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
Options that affect the interpretation of input data are:
- -C
-
This option overrides the default behavior 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.
BUGS
Only 8-bit images are handled.
SEE ALSO
tiffinfo(1),
tiffcp(1),
tiffmedian(1),
libtiff(3)
Libtiff library home page:
http://www.simplesystems.org/libtiff/