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<!-- CreationDate: Sun Mar 6 13:59:58 2005 -->
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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>TIFF2RGBA</title>
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</head>
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<body>
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<h1 align=center>TIFF2RGBA</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="#SEE ALSO">SEE ALSO</a><br>
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<hr>
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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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<td width="8%"></td>
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<td width="91%">
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<p>tiff2rgba − convert a <small>TIFF</small> image to
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RGBA color space</p>
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</td>
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</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="8%"></td>
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<td width="91%">
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<p><b>tiff2rgba</b> [ options ] <i>input.tif
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output.tif</i></p>
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</td>
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</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="8%"></td>
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<td width="91%">
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<p><i>Tiff2rgba</i> converts a wide variety of TIFF images
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into an RGBA TIFF image. This includes the ability to
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translate different color spaces and photometric
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interpretation into RGBA, support for alpha blending, and
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translation of many different bit depths into a 32bit RGBA
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image.</p>
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<!-- INDENTATION -->
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<p>Internally this program is implemented using the
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<i>TIFFReadRGBAImage()</i> function, and it suffers any
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limitations of that image. This includes limited support for
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> 8 BitsPerSample images, and flaws with some esoteric
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combinations of BitsPerSample, photometric interpretation,
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block organization and planar configuration.</p>
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<!-- INDENTATION -->
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<p>The generated images are stripped images with four
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samples per pixel (red, green, blue and alpha) or if the -n
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flag is used, three samples per pixel (red, green, and
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blue). The resulting images are always planar configuration
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contiguous. For this reason, this program is a useful
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utility for transform exotic TIFF files into a form
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ingestable by almost any TIFF supporting software.</p>
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</td>
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</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="5" cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="2%">
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<p><b>−c</b></p>
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</td>
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<td width="5%"></td>
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<td width="80%">
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<p>Specify a compression scheme to use when writing image
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data: <b>−c none</b> for no compression (the default),
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<b>-c packbits</b> for the PackBits compression algorithm,
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<b>-c zip</b> for the Deflate compression algorithm, <b>-c
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jpeg</b> for the JPEG compression algorithm, and <b>−c
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lzw</b> for Lempel-Ziv & Welch.</p>
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</td>
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<td width="0%">
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</td>
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="2%">
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<p><b>−r</b></p>
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</td>
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<td width="5%"></td>
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<td width="80%">
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<p>Write data with a specified number of rows per strip; by
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default the number of rows/strip is selected so that each
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strip is approximately 8 kilobytes.</p>
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</td>
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<td width="0%">
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</td>
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="2%">
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<p><b>−b</b></p>
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</td>
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<td width="5%"></td>
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<td width="80%">
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<p>Process the image one block (strip/tile) at a time
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instead of by reading the whole image into memory at once.
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This may be necessary for very large images on systems with
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limited RAM.</p>
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</td>
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<td width="0%">
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</td>
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="2%">
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<p><b>−n</b></p>
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</td>
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<td width="5%"></td>
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<td width="80%">
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<p>Drop the alpha component from the output file, producing
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a pure RGB file. Currently this does not work if the -b flag
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is also in effect.</p>
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</td>
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<td width="0%">
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</td>
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</table>
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<a name="SEE ALSO"></a>
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<h2>SEE ALSO</h2>
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<!-- INDENTATION -->
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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="8%"></td>
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<td width="91%">
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<p><i>tiff2bw</i>(1), <i>TIFFReadRGBAImage</i>(3t),
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<i>libtiff</i>(3)</p>
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</td>
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</table>
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<hr>
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</body>
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</html>
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