1 2 3 4 5<!DOCTYPE html> 6<html lang="en"> 7<head> 8 <meta charset="utf-8" /> 9 <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1,shrink-to-fit=no" /> 10 <title>ImageMagick - JP2 Encoding Options</title> 11 <meta name="application-name" content="ImageMagick" /> 12 <meta name="description" content="Use ImageMagick® to create, edit, compose, and convert bitmap images. 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As an example, suppose you are interested in these options:</p> 92 93<ul> 94<li>code blocks are 64 samples in width and 32 samples in height</li> 95<li>no multicomponent transform</li> 96<li>4 resolution levels for each component</li> 97<li>compression is lossy at 64:1</li> 98</ul> 99 100<p>Use this command to convert a JPEG-2000 image to the PNG image format:</p> 101 102<pre class="highlight"><code>magick convert wizard.jp2 wizard.png 103</code></pre> 104 105<p>Let's convert a JPEG image to a lossless JPEG-2000 image:</p> 106 107<pre class="highlight"><code>magick convert wizard.jpg -quality 0 wizard.jp2 108</code></pre> 109 110<p>Here we extract an area from the image:</p> 111 112<pre class="highlight"><code>magick convert 'wizard.jp2[640x480+0+0]' wizard.png 113</code></pre> 114 115<p>Extract a particular tile from the image:</p> 116 117<pre class="highlight"><code>magick convert 'wizard.jp2[2]' wizard.png 118</code></pre> 119 120<p>Specify a subsampling factor:</p> 121 122<pre class="highlight"><code>magick convert wizard.png -colorspace YUV -sampling-factor 2,2 wizard.jp2 123</code></pre> 124 125<p>Save a tiled JPEG-2000 image:</p> 126 127<pre class="highlight"><code>magick convert wizard.png 'wizard.png[512x512]' 128</code></pre> 129 130<p>Write a digital Cinema 4K profile compliant codestream:</p> 131 132<pre class="highlight"><code>magick convert wizard.png -resize 4096x2160! -depth 12 wizard.jp2 133</code></pre> 134 135<p>Here is a complete list of JPEG-2000 decoding options:</p> 136 137<div class="table-responsive" style="font-size:87.5% !important;"> 138<table class="table table-sm table-striped"> 139 <tr> 140 <td>jp2:quality-layers=<var>x</var></td> 141 <td>set the maximum number of quality layers to decode.</td> 142 </tr> 143 <tr> 144 <td>jp2:reduce-factor=<var>x</var></td> 145 <td>set the number of highest resolution levels to be discarded.</td> 146 </tr> 147</table></div> 148 149<p>Here is a complete list of JPEG-2000 encoding options:</p> 150 151<div class="table-responsive" style="font-size:87.5% !important;"> 152<table class="table table-sm table-striped"> 153 <tr> 154 <td>jp2:number-resolutions=<var>x</var></td> 155 <td>number of resolutions to encode.</td> 156 </tr> 157 <tr> 158 <td>jp2:quality=<var>x</var>,<var>x</var>,...</td> 159 <td>set the quality layer PSNR, given in dB. The order is from left to right in ascending order. The default is a single lossless quality layer.</td> 160 </tr> 161 <tr> 162 <td>jp2:rate=<var>x</var>,<var>x</var>,...</td> 163 <td>the compression ratio values. Each value is a factor of compression, thus 20 means 20 times compressed. The order is from left to right in descending order. A final lossless quality layer is signified by the value 1. The default is a single lossless quality layer.</td> 164 </tr> 165 <tr> 166 <td>jp2:progression-order=<var>x</var></td> 167 <td>choose from LRCP, RLCP, RPCL, PCRL or CPRL.</td> 168 </tr> 169</table></div> 170</div> 171 </div> 172 </main><!-- /.container --> 173 <footer class="magick-footer"> 174 <p><a href="security-policy.html">Security</a> • 175 <a href="architecture.html">Architecture</a> 176 177 <a href="jp2.html#"><img class="d-inline" id="wand" alt="And Now a Touch of Magick" width="16" height="16" src="../images/wand.ico"/></a> 178 179 <a href="links.html">Related</a> • 180 <a href="sitemap.html">Sitemap</a> 181 <br/> 182 <a href="support.html">Donate</a> • 183 <a href="http://pgp.mit.edu/pks/lookup?op=get&search=0x89AB63D48277377A">Public Key</a> • 184 <a href="https://imagemagick.org/script/contact.php">Contact Us</a> 185 <br/> 186 <small>© 1999-2020 ImageMagick Studio LLC</small></p> 187 </footer> 188 189 <!-- Javascript assets --> 190 <script src="assets/magick.js" crossorigin="anonymous"></script> 191 <script>window.jQuery || document.write('<script src="https://localhost/ajax/libs/jquery/3.4.1/jquery.min.js"><\/script>')</script> 192</body> 193</html> 194<!-- Magick Cache 5th January 2020 10:31 -->
