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
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 compress¶
Specify a compression scheme to use when writing image data: -c none for no compression, -c packbits for PackBits compression (will be used by default), -c lzw for Lempel-Ziv & Welch compression, -c jpeg for baseline JPEG compression, -c zip for Deflate compression, -c g3 for CCITT Group 3 (T.4) compression, and -c g4 for CCITT Group 4 (T.6) compression.
- -r striprows¶
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 resolution¶
Mark the resultant image to have the specified X and Y resolution (in dots/inch).