ppm2tiff(1)

PPM2TIFF(1)              USER COMMANDS                PPM2TIFF(1)

NAME

     ppm2tiff - create a TIFF file from a PPM image file

SYNOPSIS

     ppm2tiff [ options ] [ input.ppm ] output.tif

DESCRIPTION

     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  Pho-
     tometricInterpretation  tag is set to 1 (min-is-black), oth-
     erwise 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:   -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).

SEE ALSO

     tiffinfo(1), tiffcp(1), tiffmedian(1), libtiff(3)

                  Last change: October 15, 1995                 1