Provided by: libtiff-tools_4.1.0+git191117-2ubuntu0.20.04.14_amd64 bug

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


SYNOPSIS
       tiffmedian [ options ] input.tif output.tif


DESCRIPTION
       tiffmedian applies the median cut algorithm to an RGB image in input.tif to generate a palette image that
       is written to output.tif.  The generated colormap has, by  default,  256  entries.   The  image  data  is
       quantized by mapping each pixel to the closest color values in the colormap.


OPTIONS
       -c     Specify  the  compression  to  use  for  data written to the output file: none for no compression,
              packbits for PackBits compression, lzw for Lempel-Ziv & Welch compression,  and  zip  for  Deflate
              compression.   By  default tiffmedian will compress data according to the value of the Compression
              tag found in the source file.

              LZW compression can be specified together with a predictor value.  A predictor value of  2  causes
              each scanline of the output image to undergo horizontal differencing before it is encoded; a value
              of 1 forces each scanline to be encoded without differencing.  LZW-specific options are  specified
              by appending a ``:''-separated list to the ``lzw'' option; e.g.  -c lzw:2 for LZW compression with
              horizontal differencing.

       -C     Specify the number of entries to use in the generated colormap.  By default all 256 entries/colors
              are used.

       -f     Apply Floyd-Steinberg dithering before selecting a colormap entry.

       -r     Specify  the  number  of  rows  (scanlines)  in each strip of data written to the output file.  By
              default, tiffmedian attempts to set the rows/strip that no more than 8 kilobytes of data appear in
              a strip.


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


SEE ALSO
       pal2rgb(1), tiffinfo(1), tiffcp(1), tiffcmp(1), libtiff(3TIFF)

       Color  Image  Quantization  for  Frame  Buffer  Display,  Paul  Heckbert, SIGGRAPH proceedings, 1982, pp.
       297-307.

       Libtiff library home page: http://www.simplesystems.org/libtiff/