ppm2tiff
create a TIFF file from PPM, PGM and PBM image files
see also :
tiffinfo - tiffcp - tiffmedian
Synopsis
ppm2tiff
[ options ] [ input.ppm ]
output.tif
add an example, a script, a trick and tips
examples
source
print "converting $pbm to $tiff_name"
ppm2tiff -c g4 -R 300 "$pbm"
"$tiff_name";
done
tiffcp -c g4 $all_tiffs "$startdir/$2"
popd
rm -r $tempdir
description
ppm2tiff
converts a file in the PPM, PGM and
PBM image formats to TIFF. By
default, the TIFF image is created with data
samples packed (PlanarConfiguration=1), compressed
with the Packbits algorithm (Compression=32773), and
with each strip no more than 8 kilobytes. These
characteristics can be overridden, or explicitly specified
with the options described below
If the
PPM file contains greyscale data, then the
PhotometricInterpretation tag is set to 1
(min-is-black), otherwise it is set to 2 (RGB).
If no
PPM file is specified on the command line,
ppm2tiff will read from the standard input.
options
-c
Specify a compression scheme to
use when writing image data: none for no compression,
packbits for PackBits compression (will be used by
default), lzw for Lempel-Ziv & Welch compression,
jpeg for baseline JPEG compression, zip for
Deflate compression, g3 for CCITT Group 3 (T.4)
compression, and g4 for CCITT Group 4 (T.6)
compression.
-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.
-R
Mark the resultant image to have the specified X and Y
resolution (in dots/inch).
see also
tiffinfo ,
tiffcp , tiffmedian ,
libtiff
Libtiff library
home page: http://www.remotesensing.org/libtiff/