TIFFMEDIAN(1)             UNIX System V(May 2, 1990)              TIFFMEDIAN(1)


NAME
      tiffmedian - apply the median cut algorithm to data in a TIFF file

SYNOPSIS
      tiffmedian [ -c size ] [ -f ] [ -none ] [ -lzw ] [ -packbits ] [
      -rowsperstrip n ] file1 file2

DESCRIPTION
      Tiffmedian applys the median cut algorithm to an RGB image in file1 to
      generate a palette image that is written to file2.  The colormap
      generated has, by default, 256 entries; this may be modified with the -c
      option.  By default, the image data is quantized by mapping each pixel to
      the closest color values in the colormap.  If the -f option is specified,
      Floyd-Steinberg dithering is done before selecting a colormap entry.  The
      remaining options are used to specify a compression algorithm to use in
      creating the output file or the number of rows (scanlines) to place in
      each data strip in the output file.  By default, the compression
      algorithm is derived from the input file and the rows per strip is
      calculated so that each strip is no more than 8 kilobytes.

NOTES
      This program is derived from Paul Heckbert's median program.

SEE ALSO
      pal2rgb(1), tiffinfo(1), tiffcp(1), tiffcmp(1), libtiff(3)
      "Color Image Quantization for Frame Buffer Display", Paul Heckbert,
      SIGGRAPH proceedings, 1982, pp. 297-307.



























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