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       ras2tiff - create a TIFF file from a Sun rasterfile


       ras2tiff [ options ] input.ras output.tif


       ras2tiff  converts  a  file  in  the Sun rasterfile 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  overridden,  or  explicitly
       specified with the options described below.

       Any colormap information in the rasterfile is carried over to the  TIFF
       file by including a Colormap tag in the output file.  If the rasterfile
       has  a  colormap,  the  PhotometricInterpretation  tag  is  set  to   3
       (palette); otherwise it is set to 2 (RGB) if the depth is 24 or 1 (min-
       is-black) if the depth is not 24.


       -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 (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.


       Does not handle all possible rasterfiles.  In particular, ras2tiff does
       not handle run-length encoded images.


       pal2rgb(1), tiffinfo(1), tiffcp(1), tiffmedian(1), libtiff(3)

       Libtiff library home page: