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),
(3)
Libtiff library home page: