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60<p class="lead magick-description">ImageMagick's JPEG-2000 image formats, JP2 and JPC, accept a plethora of encoding options as detailed below.  As an example, suppose you are interested in these options:</p>
61
62<ul>
63<li>code blocks are 64 samples in width and 32 samples in height</li>
64<li>no multicomponent transform</li>
65<li>4 resolution levels for each component</li>
66<li>compression is lossy at 64:1</li>
67</ul>
68
69<p>Use this command to convert a JPEG-2000 image to the PNG image format:</p>
70
71<pre>
72convert wizard.jp2 wizard.png
73</pre>
74
75<p>Let's convert a JPEG image to a lossless JPEG-2000 image:</p>
76
77<pre>
78convert wizard.jpg -quality 0 wizard.jp2
79</pre>
80
81<p>Here we extract an area from the image:</p>
82
83<pre>
84convert 'wizard.jp2[640x480+0+0]' wizard.png
85</pre>
86
87<p>Extract a particular tile from the image:</p>
88
89<pre>
90convert 'wizard.jp2[2]' wizard.png
91</pre>
92
93<p>Specify a subsampling factor:</p>
94
95<pre>
96convert wizard.png -colorspace YUV -sampling-factor 2,2 wizard.jp2
97</pre>
98
99<p>Save a tiled JPEG-2000 image:</p>
100
101<pre>
102convert wizard.png 'wizard.png[512x512]'
103</pre>
104
105<p>Write a digital Cinema 4K profile compliant codestream:</p>
106
107<pre>
108convert wizard.png -resize 4096x2160! -depth 12 wizard.jp2
109</pre>
110
111<p>Here is a complete list of JPEG-2000 decoding options:</p>
112
113<div class="table-responsive">
114<table class="table table-condensed table-striped">
115  <tr>
116    <td>jp2:layer-number=<var>x</var></td>
117    <td>set the maximum number of quality layers to decode.</td>
118  </tr>
119  <tr>
120    <td>jp2:reduce-factor=<var>x</var></td>
121    <td>set the number of highest resolution levels to be discarded.</td>
122  </tr>
123</table></div>
124
125<p>Here is a complete list of JPEG-2000 encoding options:</p>
126
127<div class="table-responsive">
128<table class="table table-condensed table-striped">
129  <tr>
130    <dt>jp2:number-resolutions=<var>x</var></dt>
131    <dd>number of resolutions to encode.</dd>
132  </tr>
133  <tr>
134    <td>jp2:quality=<var>x</var>,<var>x</var>,...</td>
135    <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>
136  </tr>
137  <tr>
138    <td>jp2:rate=<var>x</var>,<var>x</var>,...</td>
139    <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>
140  </tr>
141  <tr>
142    <td>jp2:progression-order=<var>x</var></td>
143    <td>choose from LRCP, RLCP, RPCL, PCRL or CPRL.</td>
144  </tr>
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