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