ImgLib2 FAQ

<!DOCTYPE html> <html> <head> <title>ImgLib2 FAQ</title> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=3" /> <meta content="ImageJ Wiki" property="og:site_name"> <meta content="ImgLib2 FAQ" property="og:title"> <meta content="article" property="og:type"> <meta content="The ImageJ wiki is a community-edited knowledge base on topics relating to ImageJ, a public domain program for processing and analyzing scientific images, and its ecosystem of derivatives and variants, including ImageJ2, Fiji, and others." property="og:description"> <meta content="https://imagej.github.io/libs/imglib2/faq" property="og:url"> <meta content="https://imagej.github.io/media/icons/imagej2.png" property="og:image"> <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png"> <link 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</section>  <div class="container"> <header class="major special"> <a class="project-icon shadowed-box" href="/libs/imglib2"><span class="tooltip"><img src="/media/icons/imglib2.png"><span class="tooltiptext" style="top: 80%; left: 25%; width: 20em">This page describes content relating to the ImgLib2 multidimensional image processing library. Click the logo for details.</span></span></a> <h1>ImgLib2 FAQ</h1> <span class="project-counterweight"> </span> </header> </div>   <section id="page" class="main style1"> <div class="container"> <div class="box alt"></div> <div id="content" class="page-content"> <div class="notice" style="font-size: 2; background: #ebf2f8; border-left: 10px solid #67a1fe"><div class="notice-icon"><img src="/media/icons/info.svg" width="32"></div><div class="notice-content"><p>The content of this page has not been vetted since shifting away from MediaWiki. If you鈥檇 like to help, check out the <a href="/events/wiki-grand-opening/how-to-help">how to help guide</a>!</p> </div> </div> <h2 id="what-is-imglib2-anyway">What <em>is</em> ImgLib2 anyway?</h2> <p>It is a library that helps you to implement algorithms for multi-dimensional data processing. The idea is that you can concentrate on the essence of your algorithm rather than syntactic sugar. It is possible to implement an algorithm without specifying what the image鈥檚 data type is, how many dimensions it has, and how the image is stored.</p> <p>ImgLib2 is also the foundation of the <a href="/software/imagej2">ImageJ2</a> data model.</p> <h2 id="how-do-i-migrate-my-imglib1-code-to-imglib2">How do I migrate my ImgLib1 code to ImgLib2?</h2> <p>There is some <a href="/libs/imglib2/migrate-from-imglib1">rudimentary documentation</a>, but you will most likely need to ask more detailed questions on the <a href="http://forum.imagej.net">ImageJ Forum</a>.</p> <h2 id="how-to-create-a-new-image-from-scratch">How to create a new image from scratch?</h2> <div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="kt">int</span> <span class="n">w</span> <span class="o">=</span> <span class="mi">768</span><span class="o">,</span> <span class="n">h</span> <span class="o">=</span> <span class="mi">512</span><span class="o">,</span> <span class="n">timepoints</span> <span class="o">=</span> <span class="mi">20</span><span class="o">;</span> <span class="nc">Img</span><span class="o"><</span><span class="nc">FloatType</span><span class="o">></span> <span class="n">img</span> <span class="o">=</span> <span class="nc">ArrayImgs</span><span class="o">.</span><span class="na">floats</span><span class="o">(</span><span class="n">w</span><span class="o">,</span> <span class="n">h</span><span class="o">,</span> <span class="n">timepoints</span><span class="o">);</span> </code></pre></div></div> </div> </div> </section>  <section id="footer"> <ul class="icons"> <li><a href="https://forum.image.sc/tag/imagej" class="icon alt"><img src="/media/icons/image-sc.png" width="24" style="vertical-align: middle; margin-top: -10px"><span class="label">Forum</span></a></li> <li><a href="https://twitter.com/hashtag/ImageJ" class="icon brands alt fa-twitter"><span class="label">Twitter</span></a></li> <li><a href="https://github.com/imagej" 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href="/develop/command-line">Command Line</a></li> </ul></details></li> </ul></details></li>  <li><details><summary>Guides</summary><ul> <li><a href="/develop/plugins">Writing plugins</a></li> <li><a href="/develop/improving-the-code">Contributing to a plugin</a></li> <li><a href="/develop/releasing">Development lifecycle</a></li> <li><a href="/develop/building-a-pom">Building a POM</a></li> <li><a href="/develop/debugging-exercises">Hands-on debugging</a></li> <li><a href="/develop/writing-ops">Adding new ops</a></li> <li><a href="/develop/formats">Adding new formats</a></li> <li><a href="/develop/native-libraries">Using native libraries</a></li> <li><a href="/develop/tips">Tips for developers</a></li> <li><a href="/develop/cpp-tips">Tips for C++ developers</a></li> <li><a href="/develop/ij1-plugins">ImageJ 1.x plugins</a></li> <li><a href="/develop/versioning">Versioning</a></li> <li><a href="/develop/logging">Logging</a></li> <li><a href="/develop/uber-jars">Uber-JARs</a></li> 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href="/contribute/citing">Citing</a></li> <li><a href="/people">Contributors</a></li> <li><a href="/orgs">Organizations</a></li> <li><a href="/contribute/governance">Governance</a></li> <li><a href="/contribute/funding">Funding</a></li> <li><a href="/contribute/fiji">Contributing to Fiji</a></li> <li><details><summary><a href="/licensing">Licensing</a></summary><ul> <li><details><summary><a href="/licensing/open-source">Open Source</a></summary><ul> <li><a href="/licensing/apache">Apache</a></li> <li><a href="/licensing/bsd">BSD</a></li> <li><a href="/licensing/epl">EPL</a></li> <li><a href="/licensing/gpl">GPL</a></li> <li><a href="/licensing/lgpl">LGPL</a></li> <li><a href="/licensing/mit">MIT</a></li> <li><a href="/licensing/public-domain">Public domain</a></li> <li><a href="/licensing/big">BIG</a></li> </ul></details></li>  <li><a href="/licensing/closed-source">Proprietary</a></li> </ul></details></li>  <li><details><summary><a href="/editing">Editing the Wiki</a></summary><ul> 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