NAME¶
ppm2tiff - create a
TIFF file from
PPM, PGM and
PBM image files
SYNOPSIS¶
ppm2tiff [
options ] [
input.ppm ]
output.tif
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(1),
tiffcp(1),
tiffmedian(1),
libtiff(3)
Libtiff library home page:
http://www.remotesensing.org/libtiff/