10139N/A<!
DOCTYPE REFENTRY PUBLIC "-//Sun Microsystems//DTD DocBook V3.0-Based SolBook Subset V2.0//EN" [
10139N/A<!--ArborText, Inc., 1988-1999, v.4002-->
10139N/A<!
ENTITY suncopy "Copyright (c) 2004, Sun Microsystems, Inc. All Rights Reserved.">
10139N/A<
refmeta><
refentrytitle>rgb2ycbcr</
refentrytitle><
manvolnum>1</
manvolnum>
10139N/A<
refmiscinfo class="date">26 Mar 2004</
refmiscinfo>
10139N/A<
refmiscinfo class="sectdesc">&man1;</
refmiscinfo>
10139N/A<
refmiscinfo class="software">&release;</
refmiscinfo>
10139N/A<
refmiscinfo class="arch">generic</
refmiscinfo>
10139N/A<
refmiscinfo class="copyright">&suncopy;</
refmiscinfo>
11904N/A<
indexterm><
primary>rgb2ycbcr</
primary></
indexterm><
indexterm><
primary>convert
10139N/Anon-YCbCr TIFF images to YCbCr TIFF images</
primary></
indexterm>
10139N/A<
refnamediv id="rgb2ycbcr-1-name"><
refname>rgb2ycbcr</
refname><
refpurpose>
10139N/Aconvert non-YCbCr TIFF images to YCbCr TIFF images</
refpurpose></
refnamediv>
10139N/A<
refsynopsisdiv id="rgb2ycbcr-1-synp"><
title>&synp-tt;</
title>
10139N/A<
cmdsynopsis><
command>&cmd;</
command><
arg choice="opt"><
option role="nodash"><
replaceable>
10139N/Aoptions</
replaceable></
option></
arg><
arg choice="plain"><
option role="nodash"><
replaceable>
10139N/Asrc1.tif</
replaceable></
option></
arg><
arg choice="opt" rep="repeat"><
option 10139N/Arole="nodash"><
replaceable>
src2.tif</
replaceable></
option></
arg><
arg choice="plain"><
option 10139N/A<
refsect1 id="rgb2ycbcr-1-desc"><
title>&desc-tt;</
title>
10139N/A<
para><
command>&cmd;</
command> converts RGB color, grayscale, or bi-level
10139N/ATIFF images to YCbCr images by transforming and sampling pixel data. If multiple
10139N/Afiles are specified on the command line, each source file is converted to
10139N/Aa separate directory in the destination file.</
para>
10139N/A<
para>By default, chrominance samples are created by sampling 2 by 2 blocks
10139N/Aof luminance values, and output data files are compressed with the LZW compression
10139N/Ascheme, with each strip no more than 8 kilobytes. These characteristics can
10139N/Abe overridden or explicitly specified with the options described below.</
para>
10139N/A<
refsect1 id="rgb2ycbcr-1-opts"><
title>&opts-tt;</
title>
10139N/A<
para>The following options are supported:</
para>
10139N/A<
variablelist termlength="narrow">
10139N/A<
varlistentry><
term><
option>c</
option></
term><
listitem><
para>Specify a compression
10139N/Ascheme to use when writing image data:</
para>
10139N/A<
varlistentry><
term><
option>c jpeg</
option></
term><
listitem><
para>Baseline
10139N/AJPEG compression algorithm.</
para>
10139N/A<
varlistentry><
term><
option>c lzw</
option></
term><
listitem><
para>Lempel-Ziv
10139N/Aand Welch algorithm. This is the default algorithm.</
para>
10139N/A<
varlistentry><
term><
option>c none</
option></
term><
listitem><
para>No compression.
10139N/A<
varlistentry><
term><
option>c packbits</
option></
term><
listitem><
para>PackBits
10139N/A</
variablelist></
listitem></
varlistentry>
10139N/A<
varlistentry><
term><
option>h</
option></
term><
listitem><
para>Set the horizontal
10139N/Asampling dimension to one of the following: 1, 2, or 4. The default value
10139N/A<
varlistentry><
term><
option>r</
option></
term><
listitem><
para>Write data with
10139N/Aa specified number of rows per strip. By default, the number of rows per strip
10139N/Ais selected so that each strip is approximately 8 kilobytes.</
para>
10139N/A<
varlistentry><
term><
option>v</
option></
term><
listitem><
para>Set the vertical
10139N/Asampling dimension to one of the following: 1, 2, or 4. The default value
10139N/A<
refsect1 id="rgb2ycbcr-1-oper"><
title>&oper-tt;</
title>
10139N/A<
para>The following operands are supported:</
para>
10139N/A<
variablelist termlength="narrow">
10139N/A<
varlistentry><
term><
option role="nodash"><
replaceable>
src.tif</
replaceable></
option></
term>
10139N/A<
listitem><
para>The name of the input file that contains non-YCbCr TIFF data.
10139N/A<
varlistentry><
term><
option role="nodash"><
replaceable>
dest.tif</
replaceable></
option></
term>
10139N/A<
listitem><
para>The name of the output file that contains YCbCr TIFF data.
10139N/A<
refsect1 id="rgb2ycbcr-1-attr"><
title>&attr-tt;</
title>
10139N/A<
para>See <
olink targetdocent="REFMAN5" localinfo="attributes-5"><
citerefentry>
10139N/A<
refentrytitle>attributes</
refentrytitle><
manvolnum>5</
manvolnum></
citerefentry></
olink>
10139N/Afor descriptions of the following attributes:</
para>
10139N/A<
tgroup cols="2" colsep="1" rowsep="1"><
colspec colname="COLSPEC0" colwidth="1*">
10139N/A<
colspec colname="COLSPEC1" colwidth="1*">
10139N/A<
row><
entry align="center" valign="middle">ATTRIBUTE TYPE</
entry><
entry align="center" 10139N/Avalign="middle">ATTRIBUTE VALUE</
entry></
row>
10139N/A<
row><
entry colname="COLSPEC0"><
para>Interface stability</
para></
entry><
entry 13623N/Acolname="COLSPEC1"><
para>Uncommitted</
para></
entry></
row>
10139N/A<
refsect1 id="rgb2ycbcr-1-also"><
title>&also-tt;</
title>
10139N/A<!--Reference to another man page--> 10139N/A<!--Reference to a Help manual--> 10139N/A<
para><
citerefentry><
refentrytitle>tiffinfo</
refentrytitle><
manvolnum>1</
manvolnum>
10139N/A</
citerefentry>, <
citerefentry><
refentrytitle>tiffcp</
refentrytitle><
manvolnum>
10139N/A1</
manvolnum></
citerefentry>, <
citerefentry><
refentrytitle>libtiff</
refentrytitle>
10139N/A<
manvolnum>3</
manvolnum></
citerefentry></
para>
10139N/A<
refsect1 id="rgb2ycbcr-1-note"><
title>¬e-tt;</
title>
10139N/A<
para>Updated by Breda McColgan, Sun Microsystems Inc., 2004.</
para>