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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.3//EN">
<html><head><title>Pnmtofiasco User Manual</title></head>
<body>
<h1>pnmtofiasco</h1>
Updated: 12 July 2000
<br>
<a href="#index">Table Of Contents</a>
<h2>NAME</h2>
pnmtofiasco - Convert PNM file to FIASCO compressed file
<h2 id="synopsis">SYNOPSIS</h2>
<b>pnmtofiasco</b>
[<i>option</i>]...
[<i>filename</i>]...
<h2 id="description">DESCRIPTION</h2>
<p>This program is part of <a href="index.html">Netpbm</a>.
<b>pnmtofiasco</b> compresses the named pbm, pgm, or ppm image files,
or Standard Input if no file is named, and produces a FIASCO file on
Standard Output.
<h2 id="options">OPTIONS</h2>
<p>In addition to the options common to all programs based on libnetpbm
(most notably <b>-quiet</b>, see <a href="index.html#commonoptions">
Common Options</a>), <b>pnmtofiasco</b> recognizes the following
command line options:
<p>All option names may be abbreviated; for example, --optimize may be
written --optim or --opt. For most options a one letter short option
is provided. Mandatory or optional arguments to long options are
mandatory or optional for short options, too. Both short and long
options are case sensitive.
<h3 id="basicopts">Basic Options</h3>
<dl compact>
<dt><b>-i</b> <i>name</i>, <b>--input-name=</b><i>name</i>
<dd>Compress the named images, not Standard Input. If <i>name</i> is
<b>-</b>, read Standard Input. <i>name</i> has to be either an image
filename or a template of the form:
<pre>
prefix[start-end{+,-}step]suffix<br>
</pre>
<p>Templates are useful when compressing video streams: e.g., if you
specify the template <b>img0[12-01-2].pgm</b>, then <b>pnmtofiasco</b>
compresses the images img012.pgm, img010.pgm, ..., img002.pgm.
<p>If <i>name</i> is a relative path, <b>pnmtofiasco </b> searches for
the image files in the current directory and in the (colon-separated)
list of directories given by the environment variable
<b>FIASCO_IMAGES</b>.
<dt><b>-o</b> <i>output-file</i>, <b>--output-name=</b><i>name</i>
<dd>Write FIASCO output to the named file, not to Standard Output.
<p>If <i>name</i> is a relative path and the environment variable
<b>FIASCO_DATA</b> is a (colon-separated) list of directories, then
<b>pnmtofiasco</b> writes the output file to the first (writable)
directory of this list. Otherwise, <b>pnmtofiasco</b> write it to the
current directory.
<dt><b>-q</b> <i>N</i>, <b>--quality=</b><i>N</i>
<dd>Set quality of compression to <i>N</i>. Quality is 1 (worst) to
100 (best); default is 20.
<dt><b>-v</b>, <b>--version</b>
<dd>Print <b>pnmtofiasco</b> version number, then exit.
<dt><b>-V</b> <i>N</i>, <b>--verbose </b><i>N</i>
<dd>Set level of verbosity to <i>N</i>. Level is 0 (no output at
all), 1 (show progress meter), or 2 (show detailed compression
statistics); default is 1.
<dt><b>-B</b> <i>N</i>, <b>--progress-meter </b><i>N</i>
<dd>Set type of progress-meter to <i>N</i>. The following types are
available; default is 1:
<dl>
<dt><b>0</b>
<dd>no progress meter
<dt><b>1</b>
<dd>RPM style progress bar using 50 hash marks
<dt><b>2</b>
<dd>percentage meter
</dl>
<dt><b>-f</b> <i>name</i>, <b>--config=</b><i>name</i>
<dd>Load parameter file <i>name </i> to initialize the options of
<b>pnmtofiasco</b>. See file <b>system.fiascorc</b> for an example of
the syntax. Options of <b>pnmtofiasco</b> are set by any of the
following methods (in the specified order):
<ol>
<li>Global resource file <b>/etc/system.fiascorc</b>
<li>$HOME/.fiascorc
<li>command line
<li>--config=<i>name</i>
</ol>
<dt><b>-h</b>, <b>--info</b>
<dd>Print brief help, then exit.
<dt><b>-H</b>, <b>--help</b>
<dd>Print detailed help, then exit.
</dl>
<h3 id="advancedopts">Options for Advanced Users</h3>
<dl>
<dt><b>-b</b> <i>name</i>, <b>--basis-name=</b><i>name</i>
<dd>Preload compression basis <i>name</i> into FIASCO. The basis
<i>name</i> provides the initial compression dictionary. Either use
one of the files "small.fco", "medium.fco", or
"large.fco" that come with <b>pnmtofiasco </b> or create a
new ASCII basis file.
<dt><b>-z</b> <i>N</i>, <b>--optimize=</b><i>N</i>
<dd>Set optimization level to <i>N</i>. Level is 0 (fastest) to 3
(slowest); default is 1. Be warned, the encoding time dramatically
increased when <i>N</i>=<b>2</b> or <i>N</i>=<b>3</b> while the
compression performance only slightly improves.
<dt><b>-P</b>, <b>--prediction</b>
<dd>Use additional predictive coding. If this optimization is enabled
then the image is compressed in two steps. In the first step, a coarse
approximation of the image is computed using large unichrome
blocks. Finally, the delta image is computed and the prediction error
is approximated using the standard FIASCO algorithm.
<dt><b>-D</b> <i>N</i>, <b>--dictionary-size=</b><i>N</i>
<dd>Set size of dictionary that is used when coding the luminance band
to <i>N</i>; default is 10000, i.e., the dictionary is not restricted.
<dt><b>-C</b> <i>N</i>, <b>--chroma-dictionary=</b><i>N</i>
<dd>Set size of dictionary that is used when coding chroma bands to
<i>N</i>; default is 40.
<dt><b>-Q</b> <i>N</i>, <b>--chroma-qfactor=</b><i>N</i>
<dd>Reduce the quality of chroma band compression <i>N</i>-times with
respect to the user defined quality <i>q</i> of the luminance band
compression (<b>--quality</b>=<i>q</i>); default is 2.
<dt><b>-t</b> <i>N</i>, <b>--tiling-exponent=</b><i>N</i>
<dd>Subdivide the image into 2^<i>N</i> tiles prior coding; default is
4, i.e. the image is subdivided into 16 tiles. The processing order of
the individual tiles is defined by the option
<b>--tiling-method=</b><i>name</i>.
<dt><b>-T</b> <i>name</i>, <b>--tiling-method=</b><i>name</i>
<dd>Order the individual image tiles (the image is subdivided into;
see option <b>--tiling-exponent=</b><i>N</i>) by method <i>name</i>;
default is <b>desc-variance</b>.
<dl>
<dt><b>desc-variance</b>
<dd>Tiles with small variances are processed first.
<dt><b>asc-variance</b>
<dd>Tiles with large variances are processed first.
<dt><b>desc-spiral</b>
<dd>Tiles are process in spiral order starting in the middle.
<dt><b>asc-spiral</b>
<dd>Tiles are process in spiral order starting at the border.
</dl>
<dt><b>--rpf-mantissa=</b><i>N</i>
<dd>Use <i>N</i> mantissa bits for quantized coefficients.
<dt><b>--dc-rpf-mantissa=</b><i>N</i>
<dd>Use <i>N</i> mantissa bits for quantized DC coefficients.
<dt><b>--rpf-range=</b><i>N</i>
<dd>Coefficients outside the quantization interval
[-<i>N</i>,+<i>N</i>] are set to zero.
<dt><b>--dc-rpf-range=</b><i>N</i>
<dd>DC coefficients outside the quantization interval
[-<i>N</i>,+<i>N</i>] are set to zero.
</dl>
<h3 id="videoopts">Additional Options for Video Compression</h3>
<dl>
<dt><b>-s</b> <i>N</i>, <b>--smooth=</b><i>N</i>
<dd>Smooth decompressed reference frames along the partitioning
borders by the given amount <i>N</i>. <i>N</i> is 0 (no smoothing) to
100; default is 70. This factor is stored in the FIASCO file.
<dt><b>-m</b> <i>N</i>, <b>--min-level=</b><i>N</i>
<dd>Start prediction (motion compensated prediction or additional
prediction) on block level <i>N</i>; default is level 6. I.e., motion
compensation is applied to all image blocks of at least 8x8 pixels
(binary tree level <i>N</i>=6), 16x8 (<i>N</i>=7), 16x16 (<i>N</i>=8),
etc.
<dt><b>-M</b> <i>N</i>, <b>--max-level=</b><i>N</i>
<dd>Stop prediction (motion compensated prediction or additional
prediction) on block level <i>N</i>; default is level 10. I.e.,
motion compensation is applied to all image blocks of at most 16x16
pixels (<i>N</i>=8), 32x16 (<i>N</i>=9), 32x32 (<i>N</i>=10), etc.
<dt><b>-2</b>, <b>--half-pixel</b>
<dd>Use half pixel precise motion compensation.
<dt><b>-F</b> <i>N</i>, <b>--fps=</b><i>N</i>
<dd>Set number of frames per second to <i>N</i>. This value is stored
in the FIASCO output file and is used in the decoder <a
href="fiascotopnm.html">fiascotopnm</a> to control the framerate.
<dt><b>-p</b> <i>type</i>, <b>--pattern=</b><i>type</i>
<dd>Defines the type of inter frame compression which should be
applied to individual frames of a video stream. <i>type</i> is a
sequence of characters; default is "IPPPPPPPPP". Element
<b>N</b> defines the type of predicting which should be used for frame
<b>N</b>; the frame type pattern is periodically extended. Valid
characters are:
<dl>
<dt><b>I</b>
<dd>intra frame, i.e., no motion compensated prediction is used at
all.
<dt><b>P</b>
<dd>predicted frame, i.e., a previously encoded frame is used for
prediction (forward prediction).
<dt><b>B</b>
<dd>bidirectional predicted frame, i.e., not only a previously shown
frame but also a frame of the future is used for prediction (forward,
backward or interpolated prediction).
</dl>
<dt><b>--cross-B-search</b>
<dd>Instead of using exhaustive search the "Cross-B-Search"
algorithm is used to find the best interpolated prediction of
B-frames.
<dt><b>--B-as-past-ref</b>
<dd>Also use previously encoded B-frames when prediction the current
frame. If this option is not set, only I- and P-frames are used to
predict the current frame.
</dl>
<h2 id="examples">EXAMPLES</h2>
<p>Compress the still image "foo.ppm" to the FIASCO file
"foo.wfa" using the default options:
<pre>
pnmtofiasco < foo.ppm >foo.wfa
</pre>
<p>Compress the video frames "foo0*.ppm" to the FIASCO file
"video.wfa" using half pixel precise motion compensation at
a frame rate of 15 frames per second. Intra frame 1 is used to
predict P-frame 4, frames 1 and 4 are used to predict B-frames 2 and
3, and so on. Frame 10 is again an intra-frame.
<pre>
pnmtofiasco -2 -p "IBBPBBPBB" -fps 15 -o video.wfa foo0*.ppm
</pre>
<h2 id="files">FILES</h2>
<dl compact>
<dt><b>/etc/system.fiascorc</b>
<dd>The systemwide initialization file.
<dt>$HOME<b>/.fiascorc</b>
<dd>The personal initialization file.
</dl>
<h2 id="environment">ENVIRONMENT</h2>
<dl compact>
<dt><b>FIASCO_IMAGES</b>
<dd>Search path for image files. Default is "./".
<dt><b>FIASCO_DATA</b>
<dd>Search and save path for FIASCO files. Default is "./".
</dl>
<h2 id="seealso">SEE ALSO</h2>
<b><a href="fiascotopnm.html">fiascotopnm</a></b>,
<b><a href="pnmtojpeg.html">pnmtojpeg</a></b>,
<b><a href="pnmtojbig.html">pnmtojbig</a></b>,
<b><a href="pamtogif.html">pamtogif</a></b>,
<b><a href="pnm.html">pnm</a></b>
<p>Ullrich Hafner, Juergen Albert, Stefan Frank, and Michael Unger.
<b>Weighted Finite Automata for Video Compression</b>, IEEE Journal on
Selected Areas In Communications, January 1998
<p>Ullrich Hafner. <b>Low Bit-Rate Image and Video Coding with
Weighted Finite Automata</b>, Ph.D. thesis, Mensch & Buch Verlag,
ISBN 3-89820-002-7, October 1999.
<p>FIASCO: An Open-Source Fractal Image and Sequence Codec, Linux Journal,
January 2001.
<h2 id="author">AUTHOR</h2>
Ullrich Hafner <<a href="mailto:hafner@bigfoot.de">hafner@bigfoot.de</a>>
<hr>
<h2 id="index">Table Of Contents</h2>
<ul>
<li><a href="#synopsis">SYNOPSIS</a>
<li><a href="#description">DESCRIPTION</a>
<li><a href="#options">OPTIONS</a>
<ul>
<li><a href="#basicopts">Basic Options</a>
<li><a href="#advancedopts">Options for Advanced Users</a>
<li><a href="#videoopts">Additional Options for Video Compression</a>
</ul>
<li><a href="#examples">EXAMPLES</a>
<li><a href="#files">FILES</a>
<li><a href="#environment">ENVIRONMENT</a>
<li><a href="#seealso">SEE ALSO</a>
<li><a href="#author">AUTHOR</a>
</ul>
</body>
</html>
|
