linux man page for tiffmedian

tiffmedian(1)							   User Commands						     tiffmedian(1)

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  col-
       ormap.

OPTIONS
       The following options are supported:

       -c	       Specify a compression scheme to use when writing image data:

		       -c lzw		       Lempel-Ziv and Welch algorithm.

		       -c none		       No compression.

		       -c packbits	       PackBits compression algorithm.

		       -c zip		       Deflate compression algorithm.

		       If no compression-related option is specified, the input-file compression algorithm is used.

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

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

       -r	       Write  data  with  a  specified number of rows per strip. By default, the number of rows per strip is selected so that each
		       strip is approximately 8 kilobytes.

OPERANDS
       The following operands are supported:

       input.tif       The name of the input TIFF file.

       output.tif      The name of the output file.

EXTENDED DESCRIPTION
       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 being encoded. A predictor value of 1 forces each scanline to be encoded without differencing.

       LZW-specific options are specified by appending a colon-separated list to the lzw option. For example, specify -c lzw:2 for LZW compression
       with horizontal differencing.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWTiff			   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |External			   |
       +-----------------------------+-----------------------------+

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

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

NOTES
       Updated by Breda McColgan, Sun Microsystems Inc., 2004.

SunOS 5.10							    26 Mar 2004 						     tiffmedian(1)