ppm2tiff



PPM2TIFF(1)                                                        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  (PlanarConfigura-
       tion=1),  compressed  with  the  Lempel-Ziv & Welch algorithm (Compres-
       sion=5), and with each strip no more than 8 kilobytes.   These  charac-
       teristics  can  be  overriden, or explicitly specified with the options
       described below

       If the PPM file contains greyscale data, then the  PhotometricInterpre-
       tation  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.


OPTIONS

       -c     Specify  a compression scheme to use when writing image data: -c
              none for no compression, -c packbits for the  PackBits  compres-
              sion algorithm (the default), -c jpeg for the baseline JPEG com-
              pression algorithm, -c zip for  the  Deflate  compression  algo-
              rithm, 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 resolu-
              tion (in dots/inch).


SEE ALSO

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



                               October 15, 1995                    PPM2TIFF(1)

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