EVOLUTION-MANAGER

Edit File: frmt_jpeg2000.html

<html>
<head>
<title>JPEG2000 --- Implementation of the JPEG-2000 part 1
(ISO/IEC 15444-1) standard</title>
</head>

<h1>JPEG2000 --- Implementation of the JPEG-2000 part 1</h1>

This implementation based on JasPer software (see below).<p>

Starting with GDAL 1.9.0, XMP metadata can be extracted from JPEG2000 files, and will be
stored as XML raw content in the xml:XMP metadata domain.<p>

<h2>Creation Options</h2>
<ul>
	<li> <b>WORLDFILE=ON</b>: Force the generation of an associated
	ESRI world file (.wld).<p>

<li> <b>FORMAT=JP2|JPC</b>: Specify output file format.<p>

<li> Encoding parameters, directly delivered to the JasPer library
	described in the JasPer documentation. Quoted from the docs:<p>

``The following options are supported by the encoder:
	<table>
	<tr>
		<td>imgareatlx=x</td>
		<td> Set the x-coordinate of the top-left corner
			of the image area to x.</td>
	</tr>

<tr>
		<td>imgareatly=y</td>
		<td>Set the y-coordinate of the top-left corner
			of the image area to y.</td>
	</tr>

<tr>
		<td>tilegrdtlx=x</td>
		<td>Set the x-coordinate of the top-left corner
			of the tiling grid to x.</td>
	</tr>

<tr>
		<td>tilegrdtly=y</td>
		<td>Set the y-coordinate of the top-left corner
			of the tiling grid to y.</td>
	</tr>

<tr>
		<td>tilewidth=w</td>
		<td>Set the nominal tile width to w.</td>
	</tr>

<tr>
		<td>tileheight=h</td>
		<td>Set the nominal tile height to h.</td>
	</tr>

<tr>
		<td>prcwidth=w</td>
		<td>Set the precinct width to w. The argument w must be an
			integer power of two. The default value is 32768.</td>
	</tr>

<tr>
		<td>prcheight=h</td>
		<td>Set the precinct height to h. The argument h must be an
			integer power of two. The default value is 32768.</td>
	</tr>

<tr>
		<td>cblkwidth=w</td>
		<td>Set the nominal code block width to w. The argument
			w must be an integer power of two.
			The default value is 64.</td>
	</tr>

<tr>
		<td>cblkheight=h</td>
		<td>Set the nominal code block height to h. The argument
			h must be an integer power of two.
			The default value is 64.</td>
	</tr>

<tr>
		<td>mode=m</td>
		<td>Set the coding mode to m. The argument m must have
			one of the following values:
			<center><table border>
			<tr>
				<th>Value</th>	<th>Description</th>
			</tr>

<tr>
				<td>int</td>	<td>integer mode</td>
			</tr>
			<tr>
				<td>real</td>	<td>real mode</td>
			</tr>
			</table></center>
		If lossless coding is desired, the integer mode must
		be used. By default, the integer mode is employed. The
		choice of mode also determines which multicomponent
		and wavelet transforms (if any) are employed.</td>
	</tr>

<tr>
		<td>rate=r</td>
		<td>Specify the target rate. The argument r is a positive
			real number. Since a rate of one corresponds
			to no compression, one should never need
			to explicitly specify a rate greater than one.
			By default, the target rate is considered
			to be infinite.</td>
	</tr>

<tr>
		<td>ilyrrates=[, ,. . . ,      ]</td>
		
		<td>Specify the rates for any intermediate layers.
			The argument to this option is a comma separated
			list of N rates. Each rate is a positive real number.
			The rates must increase monotonically. The last	rate
			in the list should be less than or equal to the
			overall rate (as specified with the rate option).</td>
	</tr>
	
	<tr>
		<td>prg=p</td>
		<td>Set the progression order to p. The argument
			p must have one of the following values:
			<center><table border>
			<tr>
				<th>Value</th>	<th>Description</th>
			</tr>

<tr>
				<td>lrcp</td>
				<td>layer-resolution-component-position	(LRCP)
				progressive (i.e., rate scalable)</td>
			</tr>
			<tr>
				<td>rlcp</td>
				<td>resolution-layer-component-position	(RLCP)
				progressive (i.e., resolution scalable)</td>
			</tr>
			<tr>
				<td>rpcl</td>
				<td>resolution-position-component-layer (RPCL)
					progressive</td>
			</tr>
			<tr>
				<td>pcrl</td>
				<td>position-component-resolution-layer (PCRL)
					progressive</td>
			</tr>
			<tr>
				<td>cprl</td>
				<td>component-position-resolution-layer (CPRL)
					progressive</td>
			</tr>
			</table></center>
		By default, LRCP progressive ordering is employed.
		Note that the RPCL and PCRL progressions are not valid
		for all possible image geometries.
		(See standard for more details.)</td>
	</tr>
	
	<tr>
		<td>nomct</td>
		<td>Disallow the use of any multicomponent transform.</td>
	</tr>

<tr>
		<td>numrlvls=n</td>
		<td>Set the number of resolution levels to n. The argument
			n must be an integer that is greater than or equal
			to one. The default value is 6.</td>
	</tr>

<tr>
		<td>sop</td>
		<td>Generate SOP marker segments.</td>
	</tr>

<tr>
		<td>eph</td>
		<td>Generate EPH marker segments.</td>
	</tr>

<tr>
		<td>lazy</td>
		<td>Enable lazy coding mode (a.k.a. arithmetic coding
			bypass).</td>
	</tr>

<tr>
		<td>termall</td>
		<td>Terminate all coding passes.</td>
	</tr>

<tr>
		<td>segsym</td>
		<td>Use segmentation symbols.</td>
	</tr>

<tr>
		<td>vcausal</td>
		<td>Use vertically stripe causal contexts.</td>
	</tr>

<tr>
		<td>pterm</td>
		<td>Use predictable termination.</td>
	</tr>

<tr>
		<td>resetprob</td>
		<td>Reset the probability models after each coding pass.<td>
	</tr>
	
	<tr>
		<td>numgbits=n</td>
		<td>Set the number of guard bits to n.''</td>
	</tr>

</table>

</ul>

<ul>
<li> Implemented as <tt>gdal/frmts/jpeg2000/jpeg2000dataset.cpp</tt>.<p>

<li> You need modified JasPer library to build this driver with GeoJP2 support
enabled. Modified version can be downloaded from
<a href="ftp://ftp.remotesensing.org/gdal/jasper-1.900.1.uuid.tar.gz">
ftp://ftp.remotesensing.org/gdal/jasper-1.900.1.uuid.tar.gz</a><p>

<li> <a href="http://www.jpeg.org/JPEG2000.html">
Official JPEG-2000 page 
<a><p>

<li> <a href="http://www.ece.uvic.ca/~mdadams/jasper/">
The JasPer Project Home Page
</a><p>

</ul>

Other JPEG2000 GDAL drivers :
<ul>
<li><p> <a href="frmt_jp2openjpeg.html">JP2OpenJPEG: based on OpenJPEG library (open source)</a></p></li>
<li><p> <a href="frmt_jp2ecw.html">JP2ECW: based on Erdas ECW library (commercial)</a></p></li>
<li><p> <a href="frmt_jp2mrsid.html">JP2MRSID: based on LizardTech MrSID library (commercial)</a></p></li>
<li><p> <a href="frmt_jp2kak.html">JP2KAK: based on Kakadu library (commercial)</a></p></li>
</ul>

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