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ppm2tiff - create a TIFF
file from a PPM
image file
ppm2tiff [ options ] [ input.ppm ] output.tif
ppm2tiff
converts a file in the PPM
image 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 be overriden, 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: -c none for no compression, -c packbits
for the PackBits compression algorithm (the default), -c jpeg for the baseline
JPEG compression algorithm, -c zip for the Deflate compression algorithm,
and -c lzw for Lempel-Ziv & Welch 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)
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