libtiff/html/man/ppm2tiff.1.html
2002-10-07 13:47:36 +00:00

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<h1 align=center>PPM2TIFF</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>
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<h2>NAME</h2>
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<p>ppm2tiff &minus; create a <small>TIFF</small> file from a
<small>PPM</small> image file</p>
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<h2>SYNOPSIS</h2>
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<p><b>ppm2tiff</b> [ <i>options</i> ] [ <i>input.ppm</i> ]
<i>output.tif</i></p>
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<h2>DESCRIPTION</h2>
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<p><i>ppm2tiff</i> converts a file in the <small>PPM</small>
image format to <small>TIFF.</small> By default, the
<small>TIFF</small> image is created with data samples
packed (<i>PlanarConfiguration</i>=1), compressed with the
Lempel-Ziv &amp; Welch algorithm (<i>Compression</i>=5), and
with each strip no more than 8 kilobytes. These
characteristics can be overriden, or explicitly specified
with the options described below</p>
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<p>If the <small>PPM</small> file contains greyscale data,
then the <i>PhotometricInterpretation</i> tag is set to 1
(min-is-black), otherwise it is set to 2 (RGB).</p>
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<p>If no <small>PPM</small> file is specified on the command
line, <i>ppm2tiff</i> will read from the standard input.</p>
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<h2>OPTIONS</h2>
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<p><b>&minus;c</b></p>
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<p>Specify a compression scheme to use when writing image
data: <b>&minus;c none</b> for no compression, <b>-c
packbits</b> for the PackBits compression algorithm, <b>-c
jpeg</b> for the baseline JPEG compression algorithm, <b>-c
zip</b> for the Deflate compression algorithm, and
<b>&minus;c lzw</b> for Lempel-Ziv &amp; Welch compression
(the default).</p>
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<p><b>&minus;r</b></p>
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<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>
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<p><b>&minus;R</b></p>
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<p>Mark the resultant image to have the specified X and Y
resolution (in dots/inch).</p>
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<h2>SEE ALSO</h2>
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<p><i>tiffinfo</i>(1), <i>tiffcp</i>(1),
<i>tiffmedian</i>(1), <i>libtiff</i>(3)</p>
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