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-<!-- Creator : groff version 1.18.1 -->
-<!-- CreationDate: Fri Jul 13 17:43:20 2007 -->
-<html>
-<head>
-<meta name="generator" content="groff -Thtml, see www.gnu.org">
-<meta name="Content-Style" content="text/css">
-<title>TIFFMEDIAN</title>
-</head>
-<body>
-
-<h1 align=center>TIFFMEDIAN</h1>
-<a href="#NAME">NAME</a><br>
-<a href="#SYNOPSIS">SYNOPSIS</a><br>
-<a href="#DESCRIPTION">DESCRIPTION</a><br>
-<a href="#OPTIONS">OPTIONS</a><br>
-<a href="#NOTES">NOTES</a><br>
-<a href="#SEE ALSO">SEE ALSO</a><br>
-
-<hr>
-<a name="NAME"></a>
-<h2>NAME</h2>
-<!-- INDENTATION -->
-<table width="100%" border=0 rules="none" frame="void"
- cols="2" cellspacing="0" cellpadding="0">
-<tr valign="top" align="left">
-<td width="8%"></td>
-<td width="91%">
-<p>tiffmedian &minus; apply the median cut algorithm to data
-in a <small>TIFF</small> file</p>
-</td>
-</table>
-<a name="SYNOPSIS"></a>
-<h2>SYNOPSIS</h2>
-<!-- INDENTATION -->
-<table width="100%" border=0 rules="none" frame="void"
- cols="2" cellspacing="0" cellpadding="0">
-<tr valign="top" align="left">
-<td width="8%"></td>
-<td width="91%">
-<p><b>tiffmedian</b> [ <i>options</i> ] <i>input.tif
-output.tif</i></p>
-</td>
-</table>
-<a name="DESCRIPTION"></a>
-<h2>DESCRIPTION</h2>
-<!-- INDENTATION -->
-<table width="100%" border=0 rules="none" frame="void"
- cols="2" cellspacing="0" cellpadding="0">
-<tr valign="top" align="left">
-<td width="8%"></td>
-<td width="91%">
-<p><i>tiffmedian</i> applies the median cut algorithm to an
-<small>RGB</small> image in <i>input.tif</i> to generate a
-palette image that is written to <i>output.tif</i>. 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.</p>
-</td>
-</table>
-<a name="OPTIONS"></a>
-<h2>OPTIONS</h2>
-<!-- TABS -->
-<table width="100%" border=0 rules="none" frame="void"
- cols="5" cellspacing="0" cellpadding="0">
-<tr valign="top" align="left">
-<td width="11%"></td>
-<td width="2%">
-
-<p><b>&minus;c</b></p>
-</td>
-<td width="5%"></td>
-<td width="80%">
-
-<p>Specify the compression to use for data written to the
-output file: <b>none</b> for no compression, <b>packbits</b>
-for PackBits compression, <b>lzw</b> for Lempel-Ziv &amp;
-Welch compression, and <b>zip</b> for Deflate compression.
-By default <i>tiffmedian</i> will compress data according to
-the value of the <i>Compression</i> tag found in the source
-file.</p>
-</td>
-<td width="0%">
-</td>
-</table>
-<!-- INDENTATION -->
-<table width="100%" border=0 rules="none" frame="void"
- cols="2" cellspacing="0" cellpadding="0">
-<tr valign="top" align="left">
-<td width="17%"></td>
-<td width="82%">
-<p><small>LZW</small> compression can be specified together
-with a <i>predictor</i> 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
-&lsquo;&lsquo;:&rsquo;&rsquo;-separated list to the
-&lsquo;&lsquo;lzw&rsquo;&rsquo; option; e.g. <b>&minus;c
-lzw:2</b> for <small>LZW</small> compression with horizontal
-differencing.</p>
-</td>
-</table>
-<!-- TABS -->
-<table width="100%" border=0 rules="none" frame="void"
- cols="5" cellspacing="0" cellpadding="0">
-<tr valign="top" align="left">
-<td width="10%"></td>
-<td width="2%">
-
-<p><b>&minus;C</b></p>
-</td>
-<td width="6%"></td>
-<td width="80%">
-
-<p>Specify the number of entries to use in the generated
-colormap. By default all 256 entries/colors are used.</p>
-</td>
-<td width="0%">
-</td>
-<tr valign="top" align="left">
-<td width="10%"></td>
-<td width="2%">
-
-<p><b>&minus;f</b></p>
-</td>
-<td width="6%"></td>
-<td width="80%">
-
-<p>Apply Floyd-Steinberg dithering before selecting a
-colormap entry.</p>
-</td>
-<td width="0%">
-</td>
-<tr valign="top" align="left">
-<td width="10%"></td>
-<td width="2%">
-
-<p><b>&minus;r</b></p>
-</td>
-<td width="6%"></td>
-<td width="80%">
-
-<p>Specify the number of rows (scanlines) in each strip of
-data written to the output file. By default,
-<i>tiffmedian</i> attempts to set the rows/strip that no
-more than 8 kilobytes of data appear in a strip.</p>
-</td>
-<td width="0%">
-</td>
-</table>
-<a name="NOTES"></a>
-<h2>NOTES</h2>
-<!-- INDENTATION -->
-<table width="100%" border=0 rules="none" frame="void"
- cols="2" cellspacing="0" cellpadding="0">
-<tr valign="top" align="left">
-<td width="8%"></td>
-<td width="91%">
-<p>This program is derived from Paul Heckbert&rsquo;s
-<i>median</i> program.</p>
-</td>
-</table>
-<a name="SEE ALSO"></a>
-<h2>SEE ALSO</h2>
-<!-- INDENTATION -->
-<table width="100%" border=0 rules="none" frame="void"
- cols="2" cellspacing="0" cellpadding="0">
-<tr valign="top" align="left">
-<td width="8%"></td>
-<td width="91%">
-<p><b>pal2rgb</b>(1), <b>tiffinfo</b>(1), <b>tiffcp</b>(1),
-<b>tiffcmp</b>(1), <b>libtiff</b>(3TIFF)</p>
-<!-- INDENTATION -->
-<p><b>Color Image Quantization for Frame Buffer Display</b>,
-Paul Heckbert, SIGGRAPH proceedings, 1982, pp. 297-307.</p>
-<!-- INDENTATION -->
-<p>Libtiff library home page:
-<b>http://www.remotesensing.org/libtiff/</b></p>
-</td>
-</table>
-<hr>
-</body>
-</html>