ras2tiff(1)

RAS2TIFF(1)              USER COMMANDS                RAS2TIFF(1)

NAME

     ras2tiff - create a TIFF file from a Sun rasterfile

SYNOPSIS

     ras2tiff [ options ] input.ras output.tif

DESCRIPTION

     ras2tiff converts a file in the  Sun  rasterfile  format  to
     TIFF.  By  default, the TIFF image is created with data sam-
     ples packed  (PlanarConfiguration=1),  compressed  with  the
     Lempel-Ziv  & Welch algorithm (Compression=5), and with each
     strip no more than 8 kilobytes.  These  characteristics  can
     overriden,   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  PhotometricIn-
     terpretation  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.

OPTIONS

     -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  base-
          line 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.

BUGS

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

SEE ALSO

     pal2rgb(1),  tiffinfo(1),  tiffcp(1),  tiffmedian(1),   lib-
     tiff(3)

                  Last change: October 15, 1995                 1