Sophie: libtiff3-devel-3.5.7-6mdk ppc

libtiff3-devel-3.5.7-6mdk.ppc.rpm

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<H1>THUMBNAIL</H1>
Section: User Commands  (1)<BR>Updated: September 26, 1994<BR><A HREF="#index">Index</A>
<BR><A HREF="index.html">Return to Main Contents</A>
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<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>

thumbnail - create a
<FONT SIZE="-1">TIFF</FONT>
file with thumbnail images
<A NAME="lbAC">&nbsp;</A>
<H2>SYNOPSIS</H2>

<B>thumbnail</B>

[
<I>options</I>

]
<I>input.tif</I>

<I>output.tif</I>

<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>

<I>thumbnail</I>

is a program written to show how one might use the
SubIFD tag (#330) to store thumbnail images.
<I>thumbnail</I>

copies a
<FONT SIZE="-1">TIFF</FONT>
Class F facsimile file to the output file
and for each image an 8-bit greyscale 
<I>thumbnail sketch</I>.

The output file contains the thumbnail image with the associated
full-resolution page linked below with the SubIFD tag.
<P>

By default, thumbnail images are 216 pixels wide by 274 pixels high.
Pixels are calculated by sampling and filtering the input image
with each pixel value passed through a contrast curve.
<A NAME="lbAE">&nbsp;</A>
<H2>OPTIONS</H2>

<DL COMPACT>
<DT><B>-w</B>

<DD>
Specify the width of thumbnail images in pixels.
<DT><B>-h</B>

<DD>
Specify the height of thumbnail images in pixels.
<DT><B>-c</B>

<DD>
Specify a contrast curve to apply in generating the thumbnail images.
By default pixels values are passed through a linear contrast curve
that simply maps the pixel value ranges.
Alternative curves are:
<B>exp50</B>

for a 50% exponential curve,
<B>exp60</B>

for a 60% exponential curve,
<B>exp70</B>

for a 70% exponential curve,
<B>exp80</B>

for a 80% exponential curve,
<B>exp90</B>

for a 90% exponential curve,
<B>exp</B>

for a pure exponential curve,
<B>linear</B>

for a linear curve.
</DL>
<A NAME="lbAF">&nbsp;</A>
<H2>BUGS</H2>

There are no options to control the format of the saved thumbnail images.
<A NAME="lbAG">&nbsp;</A>
<H2>SEE ALSO</H2>

<I><A HREF="tiffdump+1.html">tiffdump</A></I>(1),

<I><A HREF="tiffgt+1.html">tiffgt</A></I>(1),

<I><A HREF="tiffinfo+1.html">tiffinfo</A></I>(1),

<I><A HREF="libtiff+3">libtiff</A></I>(3)


<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT><A HREF="#lbAB">NAME</A><DD>
<DT><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT><A HREF="#lbAE">OPTIONS</A><DD>
<DT><A HREF="#lbAF">BUGS</A><DD>
<DT><A HREF="#lbAG">SEE ALSO</A><DD>
</DL>
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This document was created by
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Time: 01:31:47 GMT, November 23, 1999
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