NAME¶
ras2tiff - create a
TIFF file from a Sun rasterfile
SYNOPSIS¶
ras2tiff [
options ]
input.ras output.tif
DESCRIPTION¶
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.
OPTIONS¶
- -c
- 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).
- -r
- 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.
BUGS¶
Does not handle all possible rasterfiles. In particular,
ras2tiff does
not handle run-length encoded images.
SEE ALSO¶
pal2rgb(1),
tiffinfo(1),
tiffcp(1),
tiffmedian(1),
libtiff(3)
Libtiff library home page:
http://www.remotesensing.org/libtiff/