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>JP2 Encoding Options @ ImageMagick</title> 11 <meta name="application-name" content="ImageMagick" /> 12 <meta name="description" content="Use ImageMagick® to create, edit, compose, or convert bitmap images. 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As an example, suppose you are interested in these options:</p> 86 87<ul> 88<li>code blocks are 64 samples in width and 32 samples in height</li> 89<li>no multicomponent transform</li> 90<li>4 resolution levels for each component</li> 91<li>compression is lossy at 64:1</li> 92</ul> 93 94<p>Use this command to convert a JPEG-2000 image to the PNG image format:</p> 95 96<pre class="highlight"><code>convert wizard.jp2 wizard.png 97</code></pre> 98 99<p>Let's convert a JPEG image to a lossless JPEG-2000 image:</p> 100 101<pre class="highlight"><code>convert wizard.jpg -quality 0 wizard.jp2 102</code></pre> 103 104<p>Here we extract an area from the image:</p> 105 106<pre class="highlight"><code>convert 'wizard.jp2[640x480+0+0]' wizard.png 107</code></pre> 108 109<p>Extract a particular tile from the image:</p> 110 111<pre class="highlight"><code>convert 'wizard.jp2[2]' wizard.png 112</code></pre> 113 114<p>Specify a subsampling factor:</p> 115 116<pre class="highlight"><code>convert wizard.png -colorspace YUV -sampling-factor 2,2 wizard.jp2 117</code></pre> 118 119<p>Save a tiled JPEG-2000 image:</p> 120 121<pre class="highlight"><code>convert wizard.png 'wizard.png[512x512]' 122</code></pre> 123 124<p>Write a digital Cinema 4K profile compliant codestream:</p> 125 126<pre class="highlight"><code>convert wizard.png -resize 4096x2160! -depth 12 wizard.jp2 127</code></pre> 128 129<p>Here is a complete list of JPEG-2000 decoding options:</p> 130 131<div class="table-responsive"> 132<table class="table table-sm table-striped"> 133 <tr> 134 <td>jp2:quality-layers=<var>x</var></td> 135 <td>set the maximum number of quality layers to decode.</td> 136 </tr> 137 <tr> 138 <td>jp2:reduce-factor=<var>x</var></td> 139 <td>set the number of highest resolution levels to be discarded.</td> 140 </tr> 141</table></div> 142 143<p>Here is a complete list of JPEG-2000 encoding options:</p> 144 145<div class="table-responsive"> 146<table class="table table-sm table-striped"> 147 <tr> 148 <td>jp2:number-resolutions=<var>x</var></td> 149 <td>number of resolutions to encode.</td> 150 </tr> 151 <tr> 152 <td>jp2:quality=<var>x</var>,<var>x</var>,...</td> 153 <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> 154 </tr> 155 <tr> 156 <td>jp2:rate=<var>x</var>,<var>x</var>,...</td> 157 <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> 158 </tr> 159 <tr> 160 <td>jp2:progression-order=<var>x</var></td> 161 <td>choose from LRCP, RLCP, RPCL, PCRL or CPRL.</td> 162 </tr> 163</table></div> 164</div> 165 </div> 166 </main><!-- /.container --> 167 <footer class="magick-footer"> 168 <p><a href="security-policy.html">Security</a> • 169 <a href="architecture.html">Architecture</a> • 170 <a href="links.html">Related</a> • 171 <a href="sitemap.html">Sitemap</a> 172 173 <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> 174 175 <a href="http://pgp.mit.edu/pks/lookup?op=get&search=0x89AB63D48277377A">Public Key</a> • 176 <a href="support.html">Donate</a> • 177 <a href="https://imagemagick.org/script/contact.php">Contact Us</a> 178 <br/> 179 <small>© 1999-2019 ImageMagick Studio LLC</small></p> 180 </footer> 181 182 <!-- Javascript assets --> 183 <script src="assets/magick.js" crossorigin="anonymous"></script> 184 <script>window.jQuery || document.write('<script src="https://localhost/ajax/libs/jquery/3.3.1/jquery.min.js"><\/script>')</script> 185</body> 186</html> 187<!-- Magick Cache 5th January 2019 11:43 -->
