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RAS2TIFF
RAS2TIFF
NAME
SYNOPSIS
DESCRIPTION
OPTIONS
BUGS
SEE ALSO
NAME
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ras2tiff − create a TIFF file from a
Sun rasterfile
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SYNOPSIS
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ras2tiff [ options ] input.ras
output.tif
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DESCRIPTION
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ras2tiff converts a file in the Sun rasterfile
format to TIFF. By default, the
TIFF image is created with data samples
packed (PlanarConfiguration=1), compressed with the
Lempel-Ziv & Welch algorithm (Compression=5), and
with each strip no more than 8 kilobytes. These
characteristics can overridden, or explicitly specified with
the options described below.
Any colormap information in the rasterfile is carried
over to the TIFF file by including a
Colormap tag in the output file. If the rasterfile
has a colormap, the PhotometricInterpretation tag is
set to 3 (palette); otherwise it is set to 2 (RGB) if the
depth is 24 or 1 (min-is-black) if the depth is not 24.
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OPTIONS
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−c
|
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Specify a compression scheme to use when writing image
data: −c none for no compression, −c
packbits for the PackBits compression algorithm,
−c jpeg for the baseline JPEG compression
algorithm, −c zip for the Deflate compression
algorithm, and −c lzw for Lempel-Ziv &
Welch (the default).
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−r
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Write data with a specified number of rows per strip; by
default the number of rows/strip is selected so that each
strip is approximately 8 kilobytes.
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BUGS
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Does not handle all possible rasterfiles. In particular,
ras2tiff does not handle run-length encoded
images.
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SEE ALSO
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pal2rgb(1), tiffinfo(1), tiffcp(1),
tiffmedian(1), libtiff(3)
Libtiff library home page:
http://www.remotesensing.org/libtiff/
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