1<!DOCTYPE html> 2<html prefix="og: http://ogp.me/ns# article: http://ogp.me/ns/article# 3" lang="en"> 4<head> 5<meta charset="utf-8"> 6<meta name="viewport" content="width=device-width, initial-scale=1"> 7<title>Colour | Colour Science</title> 8<link href="../assets/css/colour-science.css" rel="stylesheet" type="text/css"> 9<link href="../assets/css/baguetteBox.min.css" rel="stylesheet" type="text/css"> 10<link href="../assets/css/rst.css" rel="stylesheet" type="text/css"> 11<link href="../assets/css/code.css" rel="stylesheet" type="text/css"> 12<link href="../assets/css/theme.css" rel="stylesheet" type="text/css"> 13<link href="../assets/css/ipython.min.css" rel="stylesheet" type="text/css"> 14<link href="../assets/css/nikola_ipython.css" rel="stylesheet" type="text/css"> 15<meta name="theme-color" content="#191919"> 16<meta name="generator" content="Nikola (getnikola.com)"> 17<link rel="alternate" type="application/rss+xml" title="RSS" href="../rss.xml"> 18<link rel="canonical" href="https://www.colour-science.org/colour/">
19<script type="text/x-mathjax-config"> 20MathJax.Hub.Config({ 21 tex2jax: { 22 inlineMath: [ ['$','$'], ["\\(","\\)"] ], 23 displayMath: [ ['$$','$$'], ["\\[","\\]"] ], 24 processEscapes: true 25 }, 26 displayAlign: 'center', // Change this to 'left' if you want left-aligned equations. 27 "HTML-CSS": { 28 styles: {'.MathJax_Display': {"margin": 0}} 29 } 30}); 31</script>
31<!--[if lt IE 9]>
31<script src="../assets/js/html5.js"></script>
31<![endif]-->
31<script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"> 32</script>
32<link rel="stylesheet" href="https://use.fontawesome.com/releases/v6.7.1/css/all.css" integrity="sha384-QI8z31KmtR+tk1MYi0DfgxrjYgpTpLLol3bqZA/Q1Y8BvH+6k7/Huoj38gQOaCS7" crossorigin="anonymous"> 33<meta name="google-site-verification" content="CeWflIcbu-x7Ur7qbzTYJiRFvoGF5RljJyGZMg7H9co"> 34<meta name="author" content="Colour Developers"> 35<meta property="og:site_name" content="Colour Science"> 36<meta property="og:title" content="Colour"> 37<meta property="og:url" content="https://www.colour-science.org/colour/"> 38<meta property="og:description" content="Colour is an open-source 39Python package providing a comprehensive number of 40algorithms and datasets for colour science. 41It is freely available under the 42BSD-3-Clause terms. 43Colour is an affiliated pro"> 44<meta property="og:type" content="article"> 45<meta property="article:published_time" content="2020-04-21T10:48:26+01:00"> 46<meta property="article:tag" content="colour"> 47<meta property="article:tag" content="colour science"> 48<meta property="article:tag" content="python"> 49</head> 50<body> 51<a href="#content" class="sr-only sr-only-focusable">Skip to main content</a> 52 53<!-- Menubar --> 54 55<nav class="navbar navbar-expand-xl static-top 56navbar-dark bg-dark bg-primary 57"><div class="container"> 58<!-- This keeps the margins nice --> 59 <a class="navbar-brand" href="https://www.colour-science.org/"> 60 61 <span id="blog-title">Colour Science</span> 62 </a> 63 <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#bs-navbar" aria-controls="bs-navbar" aria-expanded="false" aria-label="Toggle navigation"> 64 <span class="navbar-toggler-icon"></span> 65 </button> 66 67 <div class="collapse navbar-collapse" id="bs-navbar"> 68 <ul class="navbar-nav mr-auto"> 69<li class="nav-item dropdown"> 70<a href="#" class="nav-link dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Projects</a> 71 <div class="dropdown-menu"> 72 <a href="../apps" class="dropdown-item"><span class="font-weight-bold">Apps (Colour - Dash)</span></a> 73 <a href="http://awesome-colour.org/" class="dropdown-item"><span class="font-weight-bold">Awesome Colour</span></a> 74 <a href="../colour" class="dropdown-item"><span class="font-weight-bold">Colour</span></a> 75 <a href="../colour-datasets" class="dropdown-item"><span class="font-weight-bold">Colour - Datasets</span></a> 76 <a href="../colour-demosaicing" class="dropdown-item"><span class="font-weight-bold">Colour - Demosaicing</span></a> 77 <a href="../colour-hdri" class="dropdown-item"><span class="font-weight-bold">Colour - HDRI</span></a> 78 <a href="../colour-checker-detection" class="dropdown-item"><span class="font-weight-bold">Colour - Checker Detection</span></a> 79 <a href="../colour-visuals" class="dropdown-item"><span class="font-weight-bold">Colour - Visuals</span></a> 80 <a href="../colour-maya" class="dropdown-item"><span class="font-weight-normal">Colour - Maya</span></a> 81 <a href="../colour-nuke" class="dropdown-item"><span class="font-weight-normal">Colour - Nuke</span></a> 82 <a href="../colour-playground" class="dropdown-item"><span class="font-weight-normal">Colour - Playground</span></a> 83 <a href="../colour-spectroscope" class="dropdown-item"><span class="font-weight-normal">Colour - Spectroscope</span></a> 84 <a href="../experiments" class="dropdown-item"><span class="font-weight-normal">Experiments</span></a> 85 </div> 86 </li> 87<li class="nav-item dropdown"> 88<a href="#" class="nav-link dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Documentation</a> 89 <div class="dropdown-menu"> 90 <a href="../installation-guide" class="dropdown-item"><span class="font-weight-bold">Installation Guide</span></a> 91 <a href="https://colour.readthedocs.io/en/develop/tutorial.html" class="dropdown-item"><span class="font-weight-bold">Static Tutorial</span></a> 92 <a href="https://colab.research.google.com/notebook#fileId=1Im9J7or9qyClQCv5sPHmKdyiQbG4898K&offline=true&sandboxMode=true" class="dropdown-item"><span class="font-weight-bold">Interactive Tutorial</span></a> 93 <a href="https://colab.research.google.com/notebook#fileId=1NRcdXSCshivkwoU2nieCvC3y14fx1X4X&offline=true&sandboxMode=true" class="dropdown-item"><span class="font-weight-bold">How-To Guide</span></a> 94 <a href="../api-reference" class="dropdown-item"><span class="font-weight-bold">API Reference</span></a> 95 <a href="../code-of-conduct" class="dropdown-item"><span class="font-weight-bold">Code of Conduct</span></a> 96 <a href="../contributing" class="dropdown-item"><span class="font-weight-bold">Contributing</span></a> 97 <a href="../contributors" class="dropdown-item"><span class="font-weight-bold">Contributors</span></a> 98 <a href="../features" class="dropdown-item"><span class="font-weight-normal">Features</span></a> 99 <a href="../history" class="dropdown-item"><span class="font-weight-normal">History</span></a> 100 <a href="https://colour.readthedocs.io/en/develop/bibliography.html" class="dropdown-item"><span class="font-weight-normal">Bibliography</span></a> 101 <a href="https://doi.org/10.5281/zenodo.17837391" class="dropdown-item"><span class="font-weight-normal">Cite Us</span></a> 102 <a href="../cited-by" class="dropdown-item"><span class="font-weight-normal">Cited By</span></a> 103 <a href="https://opensource.org/licenses/BSD-3-Clause" class="dropdown-item"><span class="font-weight-normal">License</span></a> 104 <a href="../search" class="dropdown-item"><span class="font-weight-normal">Search</span></a> 105 </div> 106 </li> 107<li class="nav-item dropdown"> 108<a href="#" class="nav-link dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Blog</a> 109 <div class="dropdown-menu"> 110 <a href="../blog" class="dropdown-item"><span class="font-weight-bold">Posts</span></a> 111 <a href="../archive.html" class="dropdown-item"><span class="font-weight-normal">Archive</span></a> 112 <a href="../categories/" class="dropdown-item"><span class="font-weight-normal">Tags</span></a> 113 </div> 114 </li> 115<li class="nav-item"> 116<a href="mailto:[email protected]" class="nav-link"><i class="fa-regular fa-envelope"></i></a> 117 </li> 118<li class="nav-item"> 119<a href="https://github.com/colour-science/colour" class="nav-link"><i class="fa-brands fa-github"></i></a> 120 </li> 121<li class="nav-item"> 122<a href="https://www.facebook.com/python.colour.science" class="nav-link"><i class="fa-brands fa-facebook"></i></a> 123 </li> 124<li class="nav-item"> 125<a href="https://gitter.im/colour-science/colour" class="nav-link"><i class="fa-brands fa-gitter"></i></a> 126 </li> 127<li class="nav-item"> 128<a href="https://x.com/colour_science" class="nav-link"><i class="fa-brands fa-x-twitter"></i></a> 129 </li> 130<li class="nav-item"> 131<a href="https://bsky.app/profile/colour-science.bsky.social" class="nav-link"><i class="fa-brands fa-bluesky"></i></a> 132 133 134 </li> 135</ul> 136<ul class="navbar-nav navbar-right"></ul> 137</div> 138<!-- /.navbar-collapse --> 139 </div> 140<!-- /.container --> 141</nav><!-- End of Menubar --><!-- Main --><div class="container" id="content" role="main"> 142 <div class="row"> 143 <div class="col-12"> 144 <div class="body-content"> 145 <!--Body content--> 146 147 148 149<article class="post-text storypage" itemscope="itemscope" itemtype="http://schema.org/Article"><header><h1 class="p-name entry-title" itemprop="headline name"><a href="." class="u-url">Colour</a></h1> 150 151 152 153 </header><div class="e-content entry-content" itemprop="articleBody text"> 154 <p><a class="reference external" href="https://github.com/colour-science/colour">Colour</a> is an open-source 155<a class="reference external" href="https://www.python.org">Python</a> package providing a comprehensive number of 156algorithms and datasets for colour science.</p> 157<p>It is freely available under the 158<a class="reference external" href="https://opensource.org/licenses/BSD-3-Clause">BSD-3-Clause</a> terms.</p> 159<p><strong>Colour</strong> is an affiliated project of <a class="reference external" href="https://numfocus.org">NumFOCUS</a>, a 160501(c)(3) nonprofit in the United States.</p> 161<section id="features"><h2>Features</h2> 162<p><strong>Colour</strong> features a rich dataset and collection of objects, please see the 163<a class="reference external" href="https://www.colour-science.org/features">features</a> page for more 164information.</p> 165<img alt="https://colour.readthedocs.io/en/develop/_static/Examples_Colour_Automatic_Conversion_Graph.png" src="https://colour.readthedocs.io/en/develop/_static/Examples_Colour_Automatic_Conversion_Graph.png"></section><section id="how-to-guide"><h2>How-To Guide</h2> 166<p>The <a class="reference external" href="https://colab.research.google.com/notebook#fileId=1NRcdXSCshivkwoU2nieCvC3y14fx1X4X&offline=true&sandboxMode=true">How-To</a> 167guide for <strong>Colour</strong> shows various techniques to solve specific problems and 168highlights some interesting use cases.</p> 169</section><section id="api"><h2>API</h2> 170<p>The main technical reference for <strong>Colour</strong> and its API is the 171<a class="reference external" href="https://colour.readthedocs.io/en/latest/reference.html">API Reference</a>.</p> 172</section><section id="examples"><h2>Examples</h2> 173<ul class="simple"> 174<li><p><a class="reference external" href="https://colour.readthedocs.io/en/develop/#examples">Colour - Readme & Documentation Examples</a></p></li> 175<li><p><a class="reference external" href="https://github.com/colour-science/colour/tree/develop/colour/examples">Colour - Example Modules</a></p></li> 176</ul></section><section id="downloads"><h2>Downloads</h2> 177<ul class="simple"> 178<li><p><a class="reference external" href="https://pypi.org/project/colour-science">Colour - Pypi</a></p></li> 179<li><p><a class="reference external" href="https://github.com/colour-science/colour">Colour - Github Repository</a></p></li> 180</ul></section> 181</div> 182 183 184</article><!--End of body content--> 185</div> 186 </div> 187 </div> 188</div> 189 190<!-- End of Main --> 191 192<!-- Footer --> 193 194<footer id="footer" class="mt-auto"><ul class="nav justify-content-center"> 195<li class="nav-item mx-3"> 196 <a href="mailto:[email protected]"> 197 <i class="fa-regular fa-envelope text-light"></i> 198 </a> 199 </li> 200 <li class="nav-item mx-3"> 201 <a href="https://github.com/colour-science/colour"> 202 <i class="fa-brands fa-github text-light"></i> 203 </a> 204 </li> 205 <li class="nav-item mx-3"> 206 <a href="https://www.facebook.com/python.colour.science"> 207 <i class="fa-brands fa-facebook text-light"></i> 208 </a> 209 </li> 210 <li class="nav-item mx-3"> 211 <a href="https://gitter.im/colour-science/colour"> 212 <i class="fa-brands fa-gitter text-light"></i> 213 </a> 214 </li> 215 <li class="nav-item mx-3"> 216 <a href="https://x.com/colour_science"> 217 <i class="fa-brands fa-x-twitter text-light"></i> 218 </a> 219 </li> 220 <li class="nav-item mx-3"> 221 <a href="https://bsky.app/profile/colour-science.bsky.social"> 222 <i class="fa-brands fa-bluesky text-light"></i> 223 </a> 224 </li> 225</ul> 226<div class="text-center text-light py-3"><span>Copyright © 2013-2026 â Colour Developers</span></div> 227 228 229</footer><!-- End of Footer -->
229<script src="../assets/js/jquery.min.js"></script>
229<script src="../assets/js/popper.min.js"></script>
229<script src="../assets/js/bootstrap.min.js"></script>
229<script src="../assets/js/baguetteBox.min.js"></script>
229<script> 230 baguetteBox.run('div#content', { 231 ignoreClass: 'islink', 232 captions: function(element) { 233 return element.getElementsByTagName('img')[0].alt; 234 }}); 235 </script>
235<!-- >>> Gitter -->
235<script> 236 ((window.gitter = {}).chat = {}).options = { 237 room: 'colour-science/colour' 238 }; 239</script>
239<script async src="https://sidecar.gitter.im/dist/sidecar.v1.js"></script>
239<!-- <<< Gitter --><!-- >>> Google Analytics -->
239<script async src="https://www.colour-science.org/assets/js/analytics.js"></script>
239<!-- <<< Google Analytics --> 240</body> 241</html>
Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.