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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,
-c jpeg for the baseline JPEG compression algorithm, -c zip for the Deflate
compression algorithm, and -c lzw for Lempel-Ziv & Welch compression (the
default).
- -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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