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-<!-- CreationDate: Sat Jun 4 16:23:28 2022 -->
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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-<html>
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-<meta name="generator" content="groff -Thtml, see www.gnu.org">
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- table { margin-top: 0; margin-bottom: 0; vertical-align: top }
- h1 { text-align: center }
-</style>
-<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>
-
-
-<h2>NAME
-<a name="NAME"></a>
-</h2>
-
-
-<p style="margin-left:11%; margin-top: 1em">tiff2bw &minus;
-convert a color <small>TIFF</small> image to greyscale</p>
-
-<h2>SYNOPSIS
-<a name="SYNOPSIS"></a>
-</h2>
-
-
-<p style="margin-left:11%; margin-top: 1em"><b>tiff2bw</b>
-[ <i>options</i> ] <i>input.tif output.tif</i></p>
-
-<h2>DESCRIPTION
-<a name="DESCRIPTION"></a>
-</h2>
-
-
-<p style="margin-left:11%; margin-top: 1em"><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>&minus;R</b>,
-<b>&minus;G</b>, and <b>&minus;B</b> options may be
-used.</p>
-
-<h2>OPTIONS
-<a name="OPTIONS"></a>
-</h2>
-
-
-<table width="100%" border="0" rules="none" frame="void"
- cellspacing="0" cellpadding="0">
-<tr valign="top" align="left">
-<td width="11%"></td>
-<td width="3%">
-
-
-<p style="margin-top: 1em"><b>&minus;c</b></p></td>
-<td width="8%"></td>
-<td width="78%">
-
-
-<p style="margin-top: 1em">Specify a compression scheme to
-use when writing image data: <b>&minus;c none</b> for no
-compression, <b>&minus;c packbits</b> for the PackBits
-compression algorithm, <b>&minus;c zip</b> for the Deflate
-compression algorithm, <b>&minus;c g3</b> for the CCITT
-Group 3 compression algorithm, <b>&minus;c g4</b> for the
-CCITT Group 4 compression algorithm, and <b>&minus;c lzw</b>
-for Lempel-Ziv &amp; Welch (the default).</p></td></tr>
-<tr valign="top" align="left">
-<td width="11%"></td>
-<td width="3%">
-
-
-<p><b>&minus;r</b></p></td>
-<td width="8%"></td>
-<td width="78%">
-
-
-<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></tr>
-<tr valign="top" align="left">
-<td width="11%"></td>
-<td width="3%">
-
-
-<p><b>&minus;R</b></p></td>
-<td width="8%"></td>
-<td width="78%">
-
-
-<p>Specify the percentage of the red channel to use
-(default 28).</p></td></tr>
-<tr valign="top" align="left">
-<td width="11%"></td>
-<td width="3%">
-
-
-<p><b>&minus;G</b></p></td>
-<td width="8%"></td>
-<td width="78%">
-
-
-<p>Specify the percentage of the green channel to use
-(default 59).</p></td></tr>
-<tr valign="top" align="left">
-<td width="11%"></td>
-<td width="3%">
-
-
-<p><b>&minus;B</b></p></td>
-<td width="8%"></td>
-<td width="78%">
-
-
-<p>Specify the percentage of the blue channel to use
-(default 11).</p></td></tr>
-</table>
-
-<h2>SEE ALSO
-<a name="SEE ALSO"></a>
-</h2>
-
-
-
-<p style="margin-left:11%; margin-top: 1em"><b>pal2rgb</b>(1),
-<b>tiffinfo</b>(1), <b>tiffcp</b>(1), <b>tiffmedian</b>(1),
-<b>libtiff</b>(3)</p>
-
-<p style="margin-left:11%; margin-top: 1em">Libtiff library
-home page: <b>http://www.simplesystems.org/libtiff/</b></p>
-<hr>
-</body>
-</html>