2002-10-07 09:47:36 -04:00
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<meta name="generator" content="groff -Thtml, see www.gnu.org">
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<meta name="Content-Style" content="text/css">
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<title>THUMBNAIL</title>
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<h1 align=center>THUMBNAIL</h1>
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<a href="#NAME">NAME</a><br>
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<a href="#SYNOPSIS">SYNOPSIS</a><br>
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<a href="#DESCRIPTION">DESCRIPTION</a><br>
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<a href="#OPTIONS">OPTIONS</a><br>
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<a href="#BUGS">BUGS</a><br>
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<a href="#SEE ALSO">SEE ALSO</a><br>
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<hr>
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2003-11-27 10:07:01 -05:00
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<!-- Creator : groff version 1.17.2 -->
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<!-- CreationDate: Thu Nov 27 17:58:10 2003 -->
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2002-10-07 09:47:36 -04:00
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<a name="NAME"></a>
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<h2>NAME</h2>
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<table width="100%" border=0 rules="none" frame="void"
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cols="2" cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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2003-11-27 10:07:01 -05:00
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<td width="10%"></td><td width="90%">
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thumbnail - create a <small>TIFF</small> file with thumbnail images</td></table>
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<a name="SYNOPSIS"></a>
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<h2>SYNOPSIS</h2>
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<table width="100%" border=0 rules="none" frame="void"
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cols="2" cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="10%"></td><td width="90%">
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<b>thumbnail</b> [ <i>options</i> ] <i>input.tif
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output.tif</i></td></table>
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<a name="DESCRIPTION"></a>
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<h2>DESCRIPTION</h2>
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<table width="100%" border=0 rules="none" frame="void"
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cols="2" cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="10%"></td><td width="90%">
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<i>thumbnail</i> is a program written to show how one might
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use the SubIFD tag (#330) to store thumbnail images.
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<i>thumbnail</i> copies a <small>TIFF</small> Class F
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facsimile file to the output file and for each image an
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8-bit greyscale <i>thumbnail sketch</i>. The output file
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contains the thumbnail image with the associated
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full-resolution page linked below with the SubIFD
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tag.</td></table>
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<table width="100%" border=0 rules="none" frame="void"
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cols="2" cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="10%"></td><td width="90%">
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By default, thumbnail images are 216 pixels wide by 274
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pixels high. Pixels are calculated by sampling and filtering
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the input image with each pixel value passed through a
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contrast curve.</td></table>
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<a name="OPTIONS"></a>
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<h2>OPTIONS</h2>
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<table width="100%" border=0 rules="none" frame="void"
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cols="2" cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="10%"></td><td width="90%">
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<b>-w</b></td></table>
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<table width="100%" border=0 rules="none" frame="void"
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cols="2" cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="21%"></td><td width="79%">
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Specify the width of thumbnail images in
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pixels.</td></table>
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<table width="100%" border=0 rules="none" frame="void"
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cols="2" cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="10%"></td><td width="90%">
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<b>-h</b></td></table>
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<table width="100%" border=0 rules="none" frame="void"
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cols="2" cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="21%"></td><td width="79%">
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Specify the height of thumbnail images in
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pixels.</td></table>
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2003-11-27 10:07:01 -05:00
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<table width="100%" border=0 rules="none" frame="void"
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cols="2" cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="10%"></td><td width="90%">
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<b>-c</b></td></table>
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2003-11-27 10:07:01 -05:00
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<table width="100%" border=0 rules="none" frame="void"
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cols="2" cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="21%"></td><td width="79%">
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Specify a contrast curve to apply in generating the
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thumbnail images. By default pixels values are passed
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through a linear contrast curve that simply maps the pixel
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value ranges. Alternative curves are: <b>exp50</b> for a 50%
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exponential curve, <b>exp60</b> for a 60% exponential curve,
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<b>exp70</b> for a 70% exponential curve, <b>exp80</b> for a
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80% exponential curve, <b>exp90</b> for a 90% exponential
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curve, <b>exp</b> for a pure exponential curve,
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<b>linear</b> for a linear curve.</td></table>
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<a name="BUGS"></a>
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<h2>BUGS</h2>
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2003-11-27 10:07:01 -05:00
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<table width="100%" border=0 rules="none" frame="void"
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2002-10-07 09:47:36 -04:00
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cols="2" cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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2003-11-27 10:07:01 -05:00
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<td width="10%"></td><td width="90%">
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There are no options to control the format of the saved
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thumbnail images.</td></table>
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2002-10-07 09:47:36 -04:00
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<a name="SEE ALSO"></a>
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<h2>SEE ALSO</h2>
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2003-11-27 10:07:01 -05:00
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<table width="100%" border=0 rules="none" frame="void"
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2002-10-07 09:47:36 -04:00
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cols="2" cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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2003-11-27 10:07:01 -05:00
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<td width="10%"></td><td width="90%">
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<i>tiffdump</i>(1), <i>tiffgt</i>(1), <i>tiffinfo</i>(1),
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<i>libtiff</i>(3)</td></table>
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2002-10-07 09:47:36 -04:00
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<hr>
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</body>
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</html>
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