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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> | |
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<a name="NAME"></a> | |
<h2>NAME</h2> | |
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<p>tiff2rgba − convert a <small>TIFF</small> image to | |
RGBA color space</p> | |
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<a name="SYNOPSIS"></a> | |
<h2>SYNOPSIS</h2> | |
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<p><b>tiff2rgba</b> [ <i>options</i> ] <i>input.tif | |
output.tif</i></p> | |
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<a name="DESCRIPTION"></a> | |
<h2>DESCRIPTION</h2> | |
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<p><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> | |
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<p>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> | |
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<p>The generated images are stripped images with four | |
samples per pixel (red, green, blue and alpha) or if the | |
<b>−n</b> 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> | |
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<a name="OPTIONS"></a> | |
<h2>OPTIONS</h2> | |
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<p><b>−c</b></p> | |
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<p>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> | |
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<p><b>−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>−b</b></p> | |
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<p>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> | |
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<p><b>−n</b></p> | |
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<p>Drop the alpha component from the output file, producing | |
a pure RGB file. Currently this does not work if the | |
<b>−b</b> flag is also in effect.</p> | |
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<a name="SEE ALSO"></a> | |
<h2>SEE ALSO</h2> | |
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<p><b>tiff2bw</b>(1), <b>TIFFReadRGBAImage</b>(3t), | |
<b>libtiff</b>(3)</p> | |
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<p>Libtiff library home page: | |
<b>http://www.remotesensing.org/libtiff/</b></p> | |
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