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<!DOCTYPE html>
<html lang="en" data-content_root="./" data-theme="auto">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="viewport" content="width=device-width, initial-scale=1" />
<meta content="Inspect binary COLMAP sparse reconstructions directly in your browser with an interactive, private, local-only Three.js viewer." name="description" />
<meta property="og:title" content="3D Viewer" />
<meta property="og:type" content="website" />
<meta property="og:url" content="https://colmap.github.io/viewer.html" />
<meta property="og:site_name" content="COLMAP" />
<meta property="og:description" content="Inspect COLMAP sparse reconstructions directly in your browser with an interactive, private, local-only 3D viewer." />
<meta property="og:image" content="https://colmap.github.io/_static/og-image.png" />
<meta property="og:image:alt" content="COLMAP — Structure-from-Motion & Multi-View Stereo" />
<meta name="twitter:card" content="summary_large_image" />
<title>3D Viewer — COLMAP</title>
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<li class="breadcrumb-item active" aria-current="page"><span class="ellipsis">3D Viewer</span></li>
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<section id="d-viewer">
<h1>3D Viewer<a class="headerlink" href="#d-viewer" title="Link to this heading">#</a></h1>
<p>Open a binary COLMAP sparse reconstruction directly in your browser. Processing
happens locally: reconstruction files and images are never uploaded.</p>
<p>The 3D Viewer follows the visual conventions and model-view controls of the
native <a class="reference internal" href="gui.html#gui"><span class="std std-ref">Graphical User Interface</span></a>, including navigation, point and
image selection, observation inspection, and point/camera scaling. It is a
read-only inspection tool with intentionally less functionality than the native
GUI: it does not run reconstruction pipelines, edit models, or visualize dense
point clouds and meshes.</p>
<link rel="stylesheet" href="_static/viewer/viewer.css">
<div id="colmap-viewer-root">
<p>The interactive viewer is unavailable in this documentation build.</p>
<noscript>This viewer requires JavaScript.</noscript>
</div>
<script type="module" src="_static/viewer/viewer.js"></script><section id="supported-inputs">
<h2>Supported Inputs<a class="headerlink" href="#supported-inputs" title="Link to this heading">#</a></h2>
<p>Drop a sparse model folder containing <code class="docutils literal notranslate"><span class="pre">cameras.bin</span></code>, <code class="docutils literal notranslate"><span class="pre">images.bin</span></code>, and
<code class="docutils literal notranslate"><span class="pre">points3D.bin</span></code>, or drop a workspace containing one or more sparse models.
Current reconstructions with <code class="docutils literal notranslate"><span class="pre">rigs.bin</span></code> and <code class="docutils literal notranslate"><span class="pre">frames.bin</span></code> and legacy binary
reconstructions are supported. If several models are found, choose one from the
toolbar.</p>
<p>To inspect image observations and reprojections, drop a workspace that also
contains the source image tree. You can also drop the images folder after the
model has loaded. Image paths are matched against the relative names recorded
in <code class="docutils literal notranslate"><span class="pre">images.bin</span></code>.</p>
</section>
<section id="controls">
<h2>Controls<a class="headerlink" href="#controls" title="Link to this heading">#</a></h2>
<ul class="simple">
<li><p><strong>Rotate:</strong> left-click and drag.</p></li>
<li><p><strong>Pan:</strong> right-click and drag.</p></li>
<li><p><strong>Zoom:</strong> scroll.</p></li>
<li><p><strong>Point size:</strong> <CTRL>-scroll (<CMD>-scroll) or use the toolbar.</p></li>
<li><p><strong>Camera size:</strong> <ALT>-scroll or use the toolbar.</p></li>
<li><p><strong>Select:</strong> double-click a point or camera.</p></li>
<li><p><strong>Clear selection:</strong> double-click the background or use the toolbar.</p></li>
</ul>
<p>The viewer requires a current desktop browser with WebGL2. Folder selection is
available as a fallback when directory drag-and-drop is not supported by the
browser.</p>
</section>
<section id="reusing-the-viewer">
<h2>Reusing the Viewer<a class="headerlink" href="#reusing-the-viewer" title="Link to this heading">#</a></h2>
<p>The viewer is also an ES module component. Build it with <code class="docutils literal notranslate"><span class="pre">npm</span> <span class="pre">run</span> <span class="pre">build</span></code> in
the <code class="docutils literal notranslate"><span class="pre">doc</span></code> directory, copy the complete <code class="docutils literal notranslate"><span class="pre">_static/viewer</span></code> directory so that
the parser worker remains beside the module, and include both generated assets:</p>
<div class="highlight-html notranslate"><div class="highlight"><pre><span></span><span class="p"><</span><span class="nt">link</span> <span class="na">rel</span><span class="o">=</span><span class="s">"stylesheet"</span> <span class="na">href</span><span class="o">=</span><span class="s">"/viewer/viewer.css"</span><span class="p">></span>
<span class="p"><</span><span class="nt">div</span> <span class="na">id</span><span class="o">=</span><span class="s">"my-viewer"</span><span class="p">></</span><span class="nt">div</span><span class="p">></span>
<span class="p"><</span><span class="nt">input</span> <span class="na">id</span><span class="o">=</span><span class="s">"model-folder"</span> <span class="na">type</span><span class="o">=</span><span class="s">"file"</span> <span class="na">webkitdirectory</span> <span class="na">multiple</span><span class="p">></span>
<span class="p"><</span><span class="nt">script</span> <span class="na">type</span><span class="o">=</span><span class="s">"module"</span><span class="p">></span>
<span class="w"> </span><span class="k">import</span><span class="w"> </span><span class="p">{</span><span class="nx">mountColmapViewer</span><span class="p">}</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s2">"/viewer/component.js"</span><span class="p">;</span>
<span class="w"> </span><span class="kd">const</span><span class="w"> </span><span class="nx">viewer</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">mountColmapViewer</span><span class="p">(</span><span class="nb">document</span><span class="p">.</span><span class="nx">querySelector</span><span class="p">(</span><span class="s2">"#my-viewer"</span><span class="p">));</span>
<span class="w"> </span><span class="nb">document</span><span class="p">.</span><span class="nx">querySelector</span><span class="p">(</span><span class="s2">"#model-folder"</span><span class="p">).</span><span class="nx">addEventListener</span><span class="p">(</span><span class="s2">"change"</span><span class="p">,</span><span class="w"> </span><span class="k">async</span><span class="w"> </span><span class="nx">event</span><span class="w"> </span><span class="p">=></span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="kd">const</span><span class="w"> </span><span class="nx">entries</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">[...</span><span class="nx">event</span><span class="p">.</span><span class="nx">target</span><span class="p">.</span><span class="nx">files</span><span class="p">].</span><span class="nx">map</span><span class="p">(</span><span class="nx">file</span><span class="w"> </span><span class="p">=></span><span class="w"> </span><span class="p">({</span>
<span class="w"> </span><span class="nx">path</span><span class="o">:</span><span class="w"> </span><span class="nx">file</span><span class="p">.</span><span class="nx">webkitRelativePath</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="nx">file</span><span class="p">.</span><span class="nx">name</span><span class="p">,</span>
<span class="w"> </span><span class="nx">file</span><span class="p">,</span>
<span class="w"> </span><span class="p">}));</span>
<span class="w"> </span><span class="k">await</span><span class="w"> </span><span class="nx">viewer</span><span class="p">.</span><span class="nx">load</span><span class="p">(</span><span class="nx">entries</span><span class="p">);</span>
<span class="w"> </span><span class="p">});</span>
<span class="w"> </span><span class="c1">// viewer.load() also accepts an already parsed Reconstruction object.</span>
<span class="w"> </span><span class="c1">// Call viewer.clear() or viewer.dispose() when appropriate.</span>
<span class="p"></</span><span class="nt">script</span><span class="p">></span>
</pre></div>
</div>
<p>Each <code class="docutils literal notranslate"><span class="pre">LocalFile</span></code> entry has the shape <code class="docutils literal notranslate"><span class="pre">{path,</span> <span class="pre">file}</span></code>, where <code class="docutils literal notranslate"><span class="pre">path</span></code> is the
file’s relative path and <code class="docutils literal notranslate"><span class="pre">file</span></code> is a browser <code class="docutils literal notranslate"><span class="pre">File</span></code> object. Multiple
component instances can coexist on one page. The TypeScript source also exports
the mount settings and lifecycle types.</p>
<p>When embedding the component on another website, please include visible
attribution to the <a class="reference external" href="https://colmap.github.io/">COLMAP project</a> and reproduce
the full <a class="reference internal" href="license.html"><span class="doc">COLMAP new BSD license notice</span></a> in the website’s legal
or third-party notices. Also retain the bundled
<a class="reference external" href="_static/viewer-licenses.txt">Three.js license notice</a> for that dependency.</p>
</section>
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