144 lines
5.2 KiB
HTML
144 lines
5.2 KiB
HTML
<html>
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<head>
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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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<!-- Creator : groff version 1.17.2 -->
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<!-- CreationDate: Mon Dec 22 00:39:34 2003 -->
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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="10%"></td><td width="90%">
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tiff2rgba - convert a <small>TIFF</small> image to RGBA color space</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>tiff2rgba</b> [ options ] <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>Tiff2rgba</i> converts a wide variety of TIFF images into
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an RGBA TIFF image. This includes the ability to translate
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different color spaces and photometric interpretation into
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RGBA, support for alpha blending, and translation of many
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different bit depths into a 32bit RGBA image.</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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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.</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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The generated images are stripped images with four samples
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per pixel (red, green, blue and alpha) or if the -n flag is
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used, three samples per pixel (red, green, and blue). The
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resulting images are always planar configuration contiguous.
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For this reason, this program is a useful utility for
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transform exotic TIFF files into a form ingestable by almost
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any TIFF supporting software.</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>-c</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 a compression scheme to use when writing image data:
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<b>-c none</b> for no compression (the default), <b>-c
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packbits</b> for the PackBits compression algorithm, <b>-c
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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.</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>-r</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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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.</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>-b</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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Process the image one block (strip/tile) at a time instead
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of by reading the whole image into memory at once. This may
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be necessary for very large images on systems with limited
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RAM.</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>-n</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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Drop the alpha component from the output file, producing a
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pure RGB file. Currently this does not work if the -b flag
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is also in effect.</td></table>
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<a name="SEE ALSO"></a>
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<h2>SEE ALSO</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>tiff2bw</i>(1), <i>TIFFReadRGBAImage</i>(3t),
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<i>libtiff</i>(3)</td></table>
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<hr>
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</body>
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</html>
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