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cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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cristyad41c0c2012-10-31 00:49:28 +0000[diff] [blame]3<head>
cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]4 <meta charset="utf-8">
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cristyffb69ed2010-12-25 00:06:48 +0000[diff] [blame]7 <title>ImageMagick: JP2 Encoding Options</title>
cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]8 <meta http-equiv="content-language" content="en-US">
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12 <meta name="description" content="ImageMagick® is a software suite to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, JPEG-2000, GIF, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.">
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14 <meta name="generator" content="PHP">
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cristy44443b92015-05-05 00:06:07 +0000[diff] [blame]24 <meta name="magick-serial" content="P131-S030410-R485315270133-P82224-A6668-G1245-1">
cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]25 <link rel="icon" href="../images/wand.png">
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cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]31<body>
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cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]33<div class="magick-masthead">
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cristyad41c0c2012-10-31 00:49:28 +0000[diff] [blame]58
cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]59<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>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]60
61<ul>
62<li>code blocks are 64 samples in width and 32 samples in height</li>
63<li>no multicomponent transform</li>
64<li>4 resolution levels for each component</li>
65<li>compression is lossy at 64:1</li>
66</ul>
67
cristyf1b8a092014-02-20 15:46:11 +0000[diff] [blame]68<p>Use this command to convert a JPEG-2000 image to the PNG image format:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]69
cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]70<pre>
71convert wizard.jp2 wizard.png
72</pre>
73
cristyf1b8a092014-02-20 15:46:11 +0000[diff] [blame]74<p>Here we extract an area from the image:</p>
cristya7cb4312010-06-26 00:47:03 +0000[diff] [blame]75
cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]76<pre>
77convert 'wizard.jp2[640x480+0+0]' wizard.png
78</pre>
79
cristyf1b8a092014-02-20 15:46:11 +0000[diff] [blame]80<p>Extract a particular tile from the image:</p>
cristy29c5c992011-06-25 13:58:49 +0000[diff] [blame]81
cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]82<pre>
83convert 'wizard.jp2[2]' wizard.png
84</pre>
85
cristyf1b8a092014-02-20 15:46:11 +0000[diff] [blame]86<p>Specify a subsampling factor:</p>
87
cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]88<pre>
89convert wizard.png -colorspace YUV -sampling-factor 2,2 wizard.jp2
90</pre>
91
cristyf1b8a092014-02-20 15:46:11 +0000[diff] [blame]92<p>Save a tiled JPEG-2000 image:</p>
93
cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]94<pre>
95convert wizard.png 'wizard.png[512x512]'
96</pre>
97
cristyf1b8a092014-02-20 15:46:11 +0000[diff] [blame]98<p>Write a digital Cinema 4K profile compliant codestream:</p>
99
cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]100<pre>
101convert wizard.png -resize 4096x2160! -depth 12 wizard.jp2
102</pre>
103
cristyf1b8a092014-02-20 15:46:11 +0000[diff] [blame]104<p>Here is a complete list of JPEG-2000 decoding options:</p>
105
cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]106<div class="table-responsive">
107<table class="table table-condensed table-striped">
108 <tr>
109 <td>jp2:layer-number=<var>x</var></td>
110 <td>set the maximum number of quality layers to decode.</td>
111 </tr>
112 <tr>
113 <td>jp2:reduce-factor=<var>x</var></td>
114 <td>set the number of highest resolution levels to be discarded.</td>
115 </tr>
116</table></div>
cristyf1b8a092014-02-20 15:46:11 +0000[diff] [blame]117
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]118<p>Here is a complete list of JPEG-2000 encoding options:</p>
119
cristyd2432012015-05-04 23:15:15 +0000[diff] [blame]120<div class="table-responsive">
121<table class="table table-condensed table-striped">
122 <tr>
123 <dt>jp2:number-resolutions=<var>x</var></dt>
124 <dd>number of resolutions to encode.</dd>
125 </tr>
126 <tr>
127 <td>jp2:quality=<var>x</var>,<var>x</var>,...</td>
128 <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>
129 </tr>
130 <tr>
131 <td>jp2:rate=<var>x</var>,<var>x</var>,...</td>
132 <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>
133 </tr>
134 <tr>
135 <td>jp2:progression-order=<var>x</var></td>
136 <td>choose from LRCP, RLCP, RPCL, PCRL or CPRL.</td>
137 </tr>
138</table></div>
cristyad41c0c2012-10-31 00:49:28 +0000[diff] [blame]139</div>
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