148 lines
3.8 KiB
HTML
148 lines
3.8 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of PNMTORLE</TITLE>
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</HEAD><BODY>
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<H1>PNMTORLE</H1>
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Section: User Commands (1)<BR>Updated: March 31, 1994<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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pnmtorle - convert a Netpbm image file into an RLE image file.
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<B>pnmtorle</B>
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[
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<B>-h</B>
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] [
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<B>-v</B>
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] [
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<B>-a</B>
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] [
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<B>-o</B><I> outfile</I>
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] [
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<I>pnmfile</I>
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]
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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This program converts Netpbm image files into Utah
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<B><A HREF="/cgi-bin/man/man2html?5+RLE">RLE</A></B>(5)
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image files. You can include an alpha mask. If the input is a multiple
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image file, the output consists of several concatenated RLE images.
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<P>
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The RLE file will contain either a three channel color image (24 bits) or
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a single channel grayscale image (8 bits) depending upon the pnm file depth.
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If a converted ppm is displayed on an 8 bit display, the image must be
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dithered. In order to produce a better looking image (on 8 bit displays),
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it is recommended that the image be quantizing (to 8 bit mapped color) prior
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to its display. This may be done by piping the output of this program into
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the Utah
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<B><A HREF="/cgi-bin/man/man2html?1+mcut">mcut</A></B>(1)
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or
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<B><A HREF="/cgi-bin/man/man2html?1+rlequant">rlequant</A></B>(1)
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utilities.
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An example of this is shown later.
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<P>
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<A NAME="lbAE"> </A>
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<H2>OPTIONS</H2>
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<DL COMPACT>
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<DT id="1"><B>-v</B>
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<DD>
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This option will cause pnmtorle to operate in verbose mode. The header
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information is written to "stderr". Actually, there is not much header
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information stored in a Netpbm file, so this information is minimal.
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<DT id="2"><B>-h</B>
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<DD>
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This option allows the header of the Netpbm image to be dumped to "stderr"
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without converting the file. It is equivalent to using the -v option except
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that no file conversion takes place.
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<DT id="3"><B>-a</B>
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<DD>
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This option causes pnmtorle to include an alpha channel in the output
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image. The alpha channel is based on the image: Wherever a pixel
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is black, the corresponding alpha value is transparent. Everywhere
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else, the alpha value is fully opaque.
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<DT id="4"><B>-o</B><I> outfile</I>
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<DD>
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If specified, the output will be written to this file. If
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<I>outfile</I>
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is "-", or if it is not specified, the output will be written to the
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standard output stream.
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<DT id="5"><I>pnmfile</I>
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<DD>
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The name of the Netpbm image data file to be converted. If not specified,
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standard input is assumed.
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</DL>
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<A NAME="lbAF"> </A>
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<H2>EXAMPLES</H2>
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<DL COMPACT>
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<DT id="6">pnmtorle -v file.ppm -o file.rle<DD>
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While running in verbose mode, convert file.ppm to RLE format and store
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resulting data in file.rle.
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<DT id="7">pnmtorle -h file.pgm<DD>
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Dump the header information of the Netpbm file called file.pgm.
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</DL>
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<A NAME="lbAG"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?1+rletopnm">rletopnm</A></B>(1),
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<B><A HREF="/cgi-bin/man/man2html?1+urt">urt</A></B>(1),
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<B><A HREF="/cgi-bin/man/man2html?5+RLE">RLE</A></B>(5).
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<A NAME="lbAH"> </A>
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<H2>AUTHOR</H2>
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<BR>
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Wes Barris
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<BR>
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Army High Performance Computing Research Center (AHPCRC)
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<BR>
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Minnesota Supercomputer Center, Inc.
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="8"><A HREF="#lbAB">NAME</A><DD>
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<DT id="9"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="10"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="11"><A HREF="#lbAE">OPTIONS</A><DD>
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<DT id="12"><A HREF="#lbAF">EXAMPLES</A><DD>
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<DT id="13"><A HREF="#lbAG">SEE ALSO</A><DD>
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<DT id="14"><A HREF="#lbAH">AUTHOR</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:24 GMT, March 31, 2021
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