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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>
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- <p>tiff2rgba − convert a <small>TIFF</small> image to
- RGBA color space</p>
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- </table>
- <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>
- </td>
- </table>
- <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>
- </td>
- </table>
- <a name="OPTIONS"></a>
- <h2>OPTIONS</h2>
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- <p><b>−c</b></p>
- </td>
- <td width="5%"></td>
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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>
- </td>
- <td width="5%"></td>
- <td width="80%">
- <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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- </td>
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- <td width="2%">
- <p><b>−b</b></p>
- </td>
- <td width="5%"></td>
- <td width="80%">
- <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>
- </td>
- <td width="0%">
- </td>
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- <td width="11%"></td>
- <td width="2%">
- <p><b>−n</b></p>
- </td>
- <td width="5%"></td>
- <td width="80%">
- <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.simplesystems.org/libtiff/</b></p>
- </td>
- </table>
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