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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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TIFF2RGBA
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NAME
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SYNOPSIS
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DESCRIPTION
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OPTIONS
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SEE ALSO
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NAME
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cols="2" cellspacing="0" cellpadding="0">
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tiff2rgba − convert a <small>TIFF</small> image to
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RGBA color space
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SYNOPSIS
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cols="2" cellspacing="0" cellpadding="0">
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tiff2rgba [ options ] input.tif
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output.tif
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DESCRIPTION
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cols="2" cellspacing="0" cellpadding="0">
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Tiff2rgba 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.
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Internally this program is implemented using the
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TIFFReadRGBAImage() 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.
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The generated images are stripped images with four
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samples per pixel (red, green, blue and alpha) or if the
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−n flag is used, three samples per pixel (red,
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green, and blue). The resulting images are always planar
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configuration contiguous. For this reason, this program is a
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useful utility for transform exotic TIFF files into a form
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ingestible by almost any TIFF supporting software.
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OPTIONS
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cols="5" cellspacing="0" cellpadding="0">
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−c
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Specify a compression scheme to use when writing image
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data: −c none for no compression (the default),
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−c packbits for the PackBits compression
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algorithm, −c zip for the Deflate compression
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algorithm, −c jpeg for the JPEG compression
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algorithm, and −c lzw for Lempel-Ziv &
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Welch.
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−r
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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.
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−b
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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.
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−n
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Drop the alpha component from the output file, producing
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a pure RGB file. Currently this does not work if the
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−b flag is also in effect.
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SEE ALSO
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cols="2" cellspacing="0" cellpadding="0">
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tiff2bw(1), TIFFReadRGBAImage(3t),
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libtiff(3)
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Libtiff library home page:
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http://www.simplesystems.org/libtiff/
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</body>
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</html>
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