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authorJörg Frings-Fürst <debian@jff-webhosting.net>2015-08-23 12:17:05 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2015-08-23 12:17:05 +0200
commitc0b89ac5bfb90835ef01573267020e42d4fe070c (patch)
tree733c16852d964d84b7565af4bdaff0bcca901b88 /tiff/man/rgb2ycbcr.1
parent094535c010320967639e8e86f974d878e80baa72 (diff)
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-.\" $Header: /cvs/maptools/cvsroot/libtiff/man/rgb2ycbcr.1,v 1.4 2006/04/20 12:17:19 dron Exp $
-.\"
-.\" Copyright (c) 1991-1997 Sam Leffler
-.\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
-.\"
-.\" Permission to use, copy, modify, distribute, and sell this software and
-.\" its documentation for any purpose is hereby granted without fee, provided
-.\" that (i) the above copyright notices and this permission notice appear in
-.\" all copies of the software and related documentation, and (ii) the names of
-.\" Sam Leffler and Silicon Graphics may not be used in any advertising or
-.\" publicity relating to the software without the specific, prior written
-.\" permission of Sam Leffler and Silicon Graphics.
-.\"
-.\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
-.\" EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
-.\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
-.\"
-.\" IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
-.\" ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
-.\" OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-.\" WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
-.\" LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
-.\" OF THIS SOFTWARE.
-.\"
-.if n .po 0
-.TH RGB2YCBCR 1 "November 2, 2005" "libtiff"
-.SH NAME
-rgb2ycbcr \- convert non-YCbCr
-.SM TIFF
-images to a YCbCr
-.SM TIFF
-image
-.SH SYNOPSIS
-.B rgb2ycbcr
-[
-.I options
-]
-.I "src1.tif src2.tif ... dst.tif"
-.SH DESCRIPTION
-.I rgb2ycbcr
-converts
-.SM RGB
-color, greyscale, or bi-level
-.SM TIFF
-images to YCbCr images by transforming and sampling pixel data. If multiple
-files are specified on the command line each source file is converted to a
-separate directory in the destination file.
-.PP
-By default, chrominance samples are created by sampling
-2 by 2 blocks of luminance values; this can be changed with the
-.B \-h
-and
-.B \-v
-options.
-Output data are compressed with the
-.SM PackBits
-compression scheme, by default; an alternate scheme can be selected with the
-.B \-c
-option.
-By default, output data are compressed in strips with
-the number of rows in each strip selected so that the
-size of a strip is never more than 8 kilobytes;
-the
-.B \-r
-option can be used to explicitly set the number of
-rows per strip.
-.SH OPTIONS
-.TP
-.B \-c
-Specify a compression scheme to use when writing image data:
-.B "\-c none"
-for no compression,
-.B "\-c packbits"
-for the PackBits compression algorithm (the default),
-.B "\-c jpeg"
-for the JPEG compression algorithm,
-.B "\-c zip"
-for the deflate compression algorithm,
-and
-.B "\-c lzw"
-for Lempel-Ziv & Welch.
-.TP
-.B \-h
-Set the horizontal sampling dimension to one of: 1, 2 (default), or 4.
-.TP
-.B \-r
-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.
-.TP
-.B \-v
-Set the vertical sampling dimension to one of: 1, 2 (default), or 4.
-.SH "SEE ALSO"
-.BR tiffinfo (1),
-.BR tiffcp (1),
-.BR libtiff (3)
-.PP
-Libtiff library home page:
-.BR http://www.remotesensing.org/libtiff