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<title>TIFF2RGBA</title>
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<h1 align=center>TIFF2RGBA</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>
<hr>
<a name="NAME"></a>
<h2>NAME</h2>
<p style="margin-left:11%; margin-top: 1em">tiff2rgba
− convert a <small>TIFF</small> image to RGBA color
space</p>
<a name="SYNOPSIS"></a>
<h2>SYNOPSIS</h2>
<p style="margin-left:11%; margin-top: 1em"><b>tiff2rgba</b>
[ options ] <i>input.tif output.tif</i></p>
<a name="DESCRIPTION"></a>
<h2>DESCRIPTION</h2>
<p style="margin-left:11%; margin-top: 1em"><i>Tiff2rgba</i>
converts a wide variety of TIFF images into an RGBA TIFF
image. This includes the ability to translate different
color spaces and photometric interpretation into RGBA,
support for alpha blending, and translation of many
different bit depths into a 32bit RGBA image.</p>
<p style="margin-left:11%; margin-top: 1em">Internally this
program is implemented using the <i>TIFFReadRGBAImage()</i>
function, and it suffers any limitations of that image. This
includes limited support for > 8 BitsPerSample images,
and flaws with some esoteric combinations of BitsPerSample,
photometric interpretation, block organization and planar
configuration.</p>
<p style="margin-left:11%; margin-top: 1em">The generated
images are stripped images with four samples per pixel (red,
green, blue and alpha) or if the -n flag is used, three
samples per pixel (red, green, and blue). The resulting
images are always planar configuration contiguous. For this
reason, this program is a useful utility for transform
exotic TIFF files into a form ingestible by almost any TIFF
supporting software.</p>
<a name="OPTIONS"></a>
<h2>OPTIONS</h2>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
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<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−c</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Specify a
compression scheme to use when writing image data:
<b>−c none</b> for no compression (the default), <b>-c
packbits</b> for the PackBits compression algorithm, <b>-c
zip</b> for the Deflate compression algorithm, <b>-c
jpeg</b> for the JPEG compression algorithm, and <b>−c
lzw</b> for Lempel-Ziv & Welch.</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−r</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">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> </td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−b</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Process the image
one block (strip/tile) at a time instead of by reading the
whole image into memory at once. This may be necessary for
very large images on systems with limited RAM.</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−n</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Drop the alpha
component from the output file, producing a pure RGB file.
Currently this does not work if the -b flag is also in
effect.</p> </td>
</table>
<a name="SEE ALSO"></a>
<h2>SEE ALSO</h2>
<p style="margin-left:11%; margin-top: 1em"><b>tiff2bw</b>(1),
<b>TIFFReadRGBAImage</b>(3t), <b>libtiff</b>(3)</p>
<p style="margin-left:11%; margin-top: 1em">Libtiff library
home page: <b>http://www.remotesensing.org/libtiff/</b></p>
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