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tiff2bw.1.html
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tiff2bw.1.html
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<!-- Creator : groff version 1.18.1 -->
<!-- CreationDate: Sat Feb 24 18:37:19 2007 -->
<html>
<head>
<meta name="generator" content="groff -Thtml, see www.gnu.org">
<meta name="Content-Style" content="text/css">
<title>TIFF2BW</title>
</head>
<body>
<h1 align=center>TIFF2BW</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="#SEE ALSO">SEE ALSO</a><br>
<hr>
<a name="NAME"></a>
<h2>NAME</h2>
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cols="2" cellspacing="0" cellpadding="0">
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<td width="8%"></td>
<td width="91%">
<p>tiff2bw − convert a color <small>TIFF</small> image
to greyscale</p>
</td>
</table>
<a name="SYNOPSIS"></a>
<h2>SYNOPSIS</h2>
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cols="2" cellspacing="0" cellpadding="0">
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<td width="8%"></td>
<td width="91%">
<p><b>tiff2bw</b> [ <i>options</i> ] <i>input.tif
output.tif</i></p>
</td>
</table>
<a name="DESCRIPTION"></a>
<h2>DESCRIPTION</h2>
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cols="2" cellspacing="0" cellpadding="0">
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<td width="8%"></td>
<td width="91%">
<p><i>Tiff2bw</i> converts an <small>RGB</small> or Palette
color <small>TIFF</small> image to a greyscale image by
combining percentages of the red, green, and blue channels.
By default, output samples are created by taking 28% of the
red channel, 59% of the green channel, and 11% of the blue
channel. To alter these percentages, the <b>−R</b>,
<b>−G</b>, and <b>−B</b> options may be
used.</p>
</td>
</table>
<a name="OPTIONS"></a>
<h2>OPTIONS</h2>
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cols="5" cellspacing="0" cellpadding="0">
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<td width="10%"></td>
<td width="3%">
<p><b>−c</b></p>
</td>
<td width="5%"></td>
<td width="80%">
<p>Specify a compression scheme to use when writing image
data: <b>−c none</b> for no compression, <b>−c
packbits</b> for the PackBits compression algorithm,
<b>−c zip</b> for the Deflate compression algorithm,
<b>−c g3</b> for the CCITT Group 3 compression
algorithm, <b>−c g4</b> for the CCITT Group 4
compression algorithm, and <b>−c lzw</b> for
Lempel-Ziv & Welch (the default).</p>
</td>
<td width="0%">
</td>
<tr valign="top" align="left">
<td width="10%"></td>
<td width="3%">
<p><b>−r</b></p>
</td>
<td width="5%"></td>
<td width="80%">
<p>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.</p>
</td>
<td width="0%">
</td>
<tr valign="top" align="left">
<td width="10%"></td>
<td width="3%">
<p><b>−R</b></p>
</td>
<td width="5%"></td>
<td width="80%">
<p>Specify the percentage of the red channel to use
(default 28).</p>
</td>
<td width="0%">
</td>
<tr valign="top" align="left">
<td width="10%"></td>
<td width="3%">
<p><b>−G</b></p>
</td>
<td width="5%"></td>
<td width="80%">
<p>Specify the percentage of the green channel to use
(default 59).</p>
</td>
<td width="0%">
</td>
<tr valign="top" align="left">
<td width="10%"></td>
<td width="3%">
<p><b>−B</b></p>
</td>
<td width="5%"></td>
<td width="80%">
<p>Specify the percentage of the blue channel to use
(default 11).</p>
</td>
<td width="0%">
</td>
</table>
<a name="SEE ALSO"></a>
<h2>SEE ALSO</h2>
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cols="2" cellspacing="0" cellpadding="0">
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<p><b>pal2rgb</b>(1), <b>tiffinfo</b>(1), <b>tiffcp</b>(1),
<b>tiffmedian</b>(1), <b>libtiff</b>(3)</p>
<!-- INDENTATION -->
<p>Libtiff library home page:
<b>http://www.simplesystems.org/libtiff/</b></p>
</td>
</table>
<hr>
</body>
</html>