Sophie: libtiff3-devel-3.5.7-6mdk ppc

libtiff3-devel-3.5.7-6mdk.ppc.rpm

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<HTML><HEAD><TITLE>Manpage of RGB2YCBCR</TITLE>
</HEAD><BODY BGCOLOR=WHITE><FONT FACE="helvetica, sans, arial">
<H1>RGB2YCBCR</H1>
Section: User Commands  (1)<BR>Updated: October 15, 1995<BR><A HREF="#index">Index</A>
<BR><A HREF="index.html">Return to Main Contents</A>
<HR>

<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>

rgb2ycbcr - convert non-YCbCr
<FONT SIZE="-1">TIFF</FONT>
images to a YCbCr
<FONT SIZE="-1">TIFF</FONT>
image
<A NAME="lbAC">&nbsp;</A>
<H2>SYNOPSIS</H2>

<B>rgb2ycbcr</B>

[
<I>options</I>

]
<I>src1.tif src2.tif ... dst.tif</I>

<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>

<I>rgb2ycbcr</I>

converts
<FONT SIZE="-1">RGB</FONT>
color, greyscale, or bi-level
<FONT SIZE="-1">TIFF</FONT>
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.
<P>

By default, chrominance samples are created by sampling
2 by 2 blocks of luminance values; this can be changed with
the
<B>-h</B>

and
<B>-v</B>

options.
Output data are compressed with the
<FONT SIZE="-1">LZW</FONT>
compression scheme, by default; an alternate scheme can be
selected with the
<B>-c</B>

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</B>

option can be used to explicitly set the number of
rows per strip.
<A NAME="lbAE">&nbsp;</A>
<H2>OPTIONS</H2>

<DL COMPACT>
<DT><B>-c</B>

<DD>
Specify a compression scheme to use when writing image data:
<B>-c none</B>

for no compression,
<B>-c packbits</B>

for the PackBits compression algorithm,
<B>-c jpeg</B>

for the JPEG compression algorithm,
and
<B>-c lzw</B>

for Lempel-Ziv &amp; Welch (the default).
<DT><B>-h</B>

<DD>
Set the horizontal sampling dimension to one of: 1, 2 (default), or 4.
<DT><B>-r</B>

<DD>
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.
<DT><B>-v</B>

<DD>
Set the vertical sampling dimension to one of: 1, 2 (default), or 4.
</DL>
<A NAME="lbAF">&nbsp;</A>
<H2>SEE ALSO</H2>

<I><A HREF="tiffinfo+1.html">tiffinfo</A></I>(1),

<I><A HREF="tiffcp+1.html">tiffcp</A></I>(1),

<I><A HREF="libtiff+3">libtiff</A></I>(3)


<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT><A HREF="#lbAB">NAME</A><DD>
<DT><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT><A HREF="#lbAE">OPTIONS</A><DD>
<DT><A HREF="#lbAF">SEE ALSO</A><DD>
</DL>
<HR>
This document was created by
<A HREF="index.html">man2html</A>,
using the manual pages.<BR>
Time: 01:31:47 GMT, November 23, 1999
</BODY>
</HTML>