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<li class="toctree-l2"><a class="reference internal" href="../../tutorials/#creating-high-quality-orthophotos">Creating High Quality Orthophotos</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../tutorials/#calibrating-the-camera">Calibrating the Camera</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../tutorials/#creating-digital-elevation-models">Creating Digital Elevation Models</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../tutorials/#measuring-stockpile-volume">Measuring stockpile volume</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../../tutorials/#steps">Steps</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../../tutorials/#install">Install</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../../tutorials/#prep-data-and-project">Prep data and project</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../../tutorials/#resize-droplet-pull-pin-run-away">Resize droplet, pull pin, run away</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../../tutorials/#after-it-finishes-assuming-you-survive-that-long">After it finishes (assuming you survive that long)</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../tutorials/#using-potree-3d-viewer-module-on-webodm">Using Potree 3D viewer module on WebODM</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../../tutorials/#cameras">Cameras</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../../tutorials/#textured-model">Textured model</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../../tutorials/#appearance">Appearance</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../../tutorials/#point-budget">Point budget</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../../tutorials/#field-of-view">Field of view</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../../tutorials/#eye-dome-lighting">Eye Dome-lighting</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../../tutorials/#background">Background</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../../tutorials/#other">Other</a></li>
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</ul>
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<li class="toctree-l3"><a class="reference internal" href="../../tutorials/#tools">Tools</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../../tutorials/#measurement">Measurement</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../../tutorials/#clipping">Clipping</a></li>
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<li class="toctree-l1 current"><a class="reference internal" href="../">Options et indicateurs</a><ul class="current">
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<li class="toctree-l2"><a class="reference internal" href="../auto-boundary/">auto-boundary</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../auto-boundary/#what-is-auto-boundary">What Is Auto-Boundary?</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../auto-boundary/#when-is-auto-boundary-helpful">When Is Auto-Boundary Helpful?</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../auto-boundary/#why-would-one-use-auto-boundary">Why would one use auto-boundary?</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../auto-boundary/#example-images">Example Images</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../auto-boundary/#true-auto-boundary">True: <code class="docutils literal notranslate"><span class="pre">--auto-boundary</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../auto-boundary/#false-null">False: <code class="docutils literal notranslate"><span class="pre">null</span></code></a></li>
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<li class="toctree-l2"><a class="reference internal" href="../boundary/">boundary</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../boundary/#what-is-boundary-geojson">What is Boundary [GeoJSON]?</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../boundary/#when-is-boundary-geojson-appropriate">When is Boundary [GeoJSON] appropriate?</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../boundary/#why-would-one-use-boundary-geojson">Why would one use Boundary [GeoJSON]?</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../boundary/#how-would-one-create-boundary-geojson">How would one create Boundary [GeoJSON]?</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../boundary/#geojson-io">GeoJSON.io</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../boundary/#qgis">QGIS</a></li>
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</ul>
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</li>
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<li class="toctree-l3"><a class="reference internal" href="../boundary/#example-images">Example Images</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../boundary/#true-boundary-geojson-point-cloud">True: <code class="docutils literal notranslate"><span class="pre">--boundary</span> <span class="pre">[GeoJSON]</span></code> - Point Cloud</a></li>
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||
<li class="toctree-l4"><a class="reference internal" href="../boundary/#true-boundary-geojson-orthophoto">True: <code class="docutils literal notranslate"><span class="pre">--boundary</span> <span class="pre">[GeoJSON]</span></code> - Orthophoto</a></li>
|
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<li class="toctree-l4"><a class="reference internal" href="../boundary/#true-boundary-geojson-digital-elevation-model">True: <code class="docutils literal notranslate"><span class="pre">--boundary</span> <span class="pre">[GeoJSON]</span></code> - Digital Elevation Model</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../boundary/#true-boundary-geojson-3d-model-textured-mesh">True: <code class="docutils literal notranslate"><span class="pre">--boundary</span> <span class="pre">[GeoJSON]</span></code> - 3D Model/Textured Mesh</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../boundary/#false-null">False: <code class="docutils literal notranslate"><span class="pre">null</span></code></a></li>
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</ul>
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</li>
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</ul>
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</li>
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<li class="toctree-l2"><a class="reference internal" href="../build-overviews/">build-overviews</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../build-overviews/#what-are-overviews">What Are Overviews?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../build-overviews/#when-are-overviews-appropriate">When are Overviews appropriate?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../build-overviews/#why-would-one-use-overviews">Why would one use Overviews?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../build-overviews/#example-images">Example Images</a><ul>
|
||
<li class="toctree-l4"><a class="reference internal" href="../build-overviews/#true-build-overviews">True: <code class="docutils literal notranslate"><span class="pre">--build-overviews</span></code></a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../build-overviews/#false-null">False: <code class="docutils literal notranslate"><span class="pre">null</span></code></a></li>
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</ul>
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||
</li>
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||
</ul>
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||
</li>
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<li class="toctree-l2 current"><a class="current reference internal" href="#">camera-lens</a><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="#what-are-camera-lens-models">What Are Camera Lens Models?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="#when-are-manual-selections-appropriate">When are manual selections appropriate?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="#why-would-one-use-a-particular-camera-lens-model">Why would one use a particular Camera Lens Model?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="#example-images">Example Images</a><ul>
|
||
<li class="toctree-l4"><a class="reference internal" href="#auto-rectilinear-data"><code class="docutils literal notranslate"><span class="pre">auto</span></code> : Rectilinear Data</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="#brown-rectilinear-data"><code class="docutils literal notranslate"><span class="pre">brown</span></code> : Rectilinear Data</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="#fisheye-rectilinear-data"><code class="docutils literal notranslate"><span class="pre">fisheye</span></code> : Rectilinear Data</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="#perspective-rectilinear-data"><code class="docutils literal notranslate"><span class="pre">perspective</span></code> : Rectilinear Data</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="#spherical-rectilinear-data"><code class="docutils literal notranslate"><span class="pre">spherical</span></code> : Rectilinear Data</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cameras/">cameras</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../cog/">cog</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../cog/#what-are-cloud-optimized-geotiffs-cogs">What Are Cloud Optimized GeoTIFFs (COGs)?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../cog/#when-are-cogs-appropriate">When are COGs appropriate?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../cog/#why-would-one-use-cogs">Why would one use COGs?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../cog/#example-images">Example Images</a><ul>
|
||
<li class="toctree-l4"><a class="reference internal" href="../cog/#true-cog">True: <code class="docutils literal notranslate"><span class="pre">--cog</span></code></a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../cog/#false-null">False: <code class="docutils literal notranslate"><span class="pre">null</span></code></a></li>
|
||
</ul>
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</li>
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</ul>
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<li class="toctree-l2"><a class="reference internal" href="../copy-to/">copy-to</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../crop/">crop</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../debug/">debug</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../dem-decimation/">dem-decimation</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../dem-euclidean-map/">dem-euclidean-map</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../dem-gapfill-steps/">dem-gapfill-steps</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../dem-resolution/">dem-resolution</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../depthmap-resolution/">depthmap-resolution</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../dsm/">dsm</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../dtm/">dtm</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../end-with/">end-with</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../fast-orthophoto/">fast-orthophoto</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../feature-quality/">feature-quality</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../feature-type/">feature-type</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../force-gps/">force-gps</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../gcp/">gcp</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../geo/">geo</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../gps-accuracy/">gps-accuracy</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../help/">help</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../ignore-gsd/">ignore-gsd</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../matcher-neighbors/">matcher-neighbors</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../matcher-type/">matcher-type</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../max-concurrency/">max-concurrency</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../merge/">merge</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../mesh-octree-depth/">mesh-octree-depth</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../mesh-size/">mesh-size</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../min-num-features/">min-num-features</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../name/">name</a></li>
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<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
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<section id="camera-lens">
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<span id="id1"></span><h1>camera-lens<a class="headerlink" href="#camera-lens" title="Lien permanent vers ce titre"></a></h1>
|
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<p><strong>Options:</strong> <em>auto | perspective | brown | fisheye | spherical</em></p>
|
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<p>Set a camera projection type. Manually setting a value can help improve geometric undistortion. By default the application tries to determine a lens type from the images metadata. . Default: <code class="docutils literal notranslate"><span class="pre">auto</span></code></p>
|
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<div class="line-block">
|
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<div class="line">Parameter Type:</div>
|
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<div class="line-block">
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<div class="line"><strong>String</strong></div>
|
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</div>
|
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<div class="line">Parameter Domain:</div>
|
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<div class="line-block">
|
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<div class="line"><code class="docutils literal notranslate"><span class="pre">auto</span></code> : Automatic selection of best camera projection model.</div>
|
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<div class="line"><code class="docutils literal notranslate"><span class="pre">brown</span></code> : Robust rectilinear projection model. Preferred by <code class="docutils literal notranslate"><span class="pre">auto</span></code>.</div>
|
||
<div class="line"><code class="docutils literal notranslate"><span class="pre">fisheye</span></code> : Wide-angle / non-rectilinear projection model.</div>
|
||
<div class="line"><code class="docutils literal notranslate"><span class="pre">perspective</span></code> : Legacy rectilinear projection model.</div>
|
||
<div class="line"><code class="docutils literal notranslate"><span class="pre">spherical</span></code> : 360° camera projection model.</div>
|
||
</div>
|
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<div class="line">Parameter Default:</div>
|
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<div class="line-block">
|
||
<div class="line"><code class="docutils literal notranslate"><span class="pre">auto</span></code></div>
|
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</div>
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</div>
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<table class="docutils align-default">
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<colgroup>
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<col style="width: 44%" />
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<col style="width: 56%" />
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</colgroup>
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<thead>
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<tr class="row-odd"><th class="head"><p>Resource</p></th>
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<th class="head"><p>Impact</p></th>
|
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</tr>
|
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</thead>
|
||
<tbody>
|
||
<tr class="row-even"><td><p>CPU</p></td>
|
||
<td><p>●○○ | Low</p></td>
|
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</tr>
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<tr class="row-odd"><td><p>GPU</p></td>
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<td><p>○○○ | None</p></td>
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</tr>
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<tr class="row-even"><td><p>HDD</p></td>
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<td><p>●○○ | Low</p></td>
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</tr>
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<tr class="row-odd"><td><p>RAM</p></td>
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<td><p>●○○ | Low</p></td>
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</tr>
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<tr class="row-even"><td><p>Time</p></td>
|
||
<td><p>●○○ | Low</p></td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<hr class="docutils" />
|
||
<section id="what-are-camera-lens-models">
|
||
<h2>What Are Camera Lens Models?<a class="headerlink" href="#what-are-camera-lens-models" title="Lien permanent vers ce titre"></a></h2>
|
||
<p>Camera Lens Models are projection/distortion models that OpenSFM uses to correct for the optics of the camera platforms that record our images. These corrections are essential for proper camera/scene modeling, and therefore, proper reconstruction of the data.</p>
|
||
</section>
|
||
<section id="when-are-manual-selections-appropriate">
|
||
<h2>When are manual selections appropriate?<a class="headerlink" href="#when-are-manual-selections-appropriate" title="Lien permanent vers ce titre"></a></h2>
|
||
<p>Manually choosing a Camera Lens Model is currently only recommended in the case of Spherical Cameras (GoPro Fusion, GoPro Max, Insta360, Kodak PixPro, etc.) as these are currently not detected automatically by OpenSFM.</p>
|
||
</section>
|
||
<section id="why-would-one-use-a-particular-camera-lens-model">
|
||
<h2>Why would one use a particular Camera Lens Model?<a class="headerlink" href="#why-would-one-use-a-particular-camera-lens-model" title="Lien permanent vers ce titre"></a></h2>
|
||
<p>In rare cases, OpenSFM may not be able to detect (or retrieve from its Camera database) the correct Camera Lens Model for your particular sensor, in which case you should select the closest appropriate model. When in doubt, try specifying <code class="docutils literal notranslate"><span class="pre">brown</span></code> first.</p>
|
||
</section>
|
||
<section id="example-images">
|
||
<h2>Example Images<a class="headerlink" href="#example-images" title="Lien permanent vers ce titre"></a></h2>
|
||
<p>The following examples are all data taken with a standard Rectilinear Lens. Manual selection of the various Camera Lens Models is demonstrated to show some differences in how this will affect reconstruction.</p>
|
||
<section id="auto-rectilinear-data">
|
||
<h3><code class="docutils literal notranslate"><span class="pre">auto</span></code> : Rectilinear Data<a class="headerlink" href="#auto-rectilinear-data" title="Lien permanent vers ce titre"></a></h3>
|
||
<figure class="align-default" id="id2">
|
||
<img alt="Rectilinear data rendered by ``auto`` Camera Lens Model" src="https://user-images.githubusercontent.com/19295950/127077336-ae79a958-a953-4376-86fd-430d0e5457f2.png" />
|
||
<figcaption>
|
||
<p><span class="caption-text">This Point Cloud shows a proper reconstruction via the <code class="docutils literal notranslate"><span class="pre">auto</span></code> (<code class="docutils literal notranslate"><span class="pre">brown</span></code>) Camera Lens Model, which is appropriate for this sensor.</span><a class="headerlink" href="#id2" title="Lien permanent vers cette image"></a></p>
|
||
</figcaption>
|
||
</figure>
|
||
</section>
|
||
<section id="brown-rectilinear-data">
|
||
<h3><code class="docutils literal notranslate"><span class="pre">brown</span></code> : Rectilinear Data<a class="headerlink" href="#brown-rectilinear-data" title="Lien permanent vers ce titre"></a></h3>
|
||
<figure class="align-default" id="id3">
|
||
<img alt="Rectilinear data rendered by ``brown`` Camera Lens Model" src="https://user-images.githubusercontent.com/19295950/127077753-580a174e-7572-4315-8801-224ce097d9fc.png" />
|
||
<figcaption>
|
||
<p><span class="caption-text">As in the prior example, this Point Cloud is reconstructed via the <code class="docutils literal notranslate"><span class="pre">brown</span></code> Camera Lens Model.</span><a class="headerlink" href="#id3" title="Lien permanent vers cette image"></a></p>
|
||
</figcaption>
|
||
</figure>
|
||
</section>
|
||
<section id="fisheye-rectilinear-data">
|
||
<h3><code class="docutils literal notranslate"><span class="pre">fisheye</span></code> : Rectilinear Data<a class="headerlink" href="#fisheye-rectilinear-data" title="Lien permanent vers ce titre"></a></h3>
|
||
<figure class="align-default" id="id4">
|
||
<img alt="Rectilinear data rendered by ``fisheye`` Camera Lens Model" src="https://user-images.githubusercontent.com/19295950/127077826-53d459fe-5e4e-4b10-8e70-fbddf775c4f7.png" />
|
||
<figcaption>
|
||
<p><span class="caption-text">In this Point Cloud reconstruction, severe bowling and other artifacts have been introduced via the use of the wrong Camera Lens Model.</span><a class="headerlink" href="#id4" title="Lien permanent vers cette image"></a></p>
|
||
</figcaption>
|
||
</figure>
|
||
</section>
|
||
<section id="perspective-rectilinear-data">
|
||
<h3><code class="docutils literal notranslate"><span class="pre">perspective</span></code> : Rectilinear Data<a class="headerlink" href="#perspective-rectilinear-data" title="Lien permanent vers ce titre"></a></h3>
|
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<figure class="align-default" id="id5">
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<img alt="Rectilinear data rendered by ``perspective`` Camera Lens Model" src="https://user-images.githubusercontent.com/19295950/127077485-699f9e61-72a6-45f2-990f-f5748b6ee99f.png" />
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<figcaption>
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||
<p><span class="caption-text">This Point Cloud rendered well, very similar to the <code class="docutils literal notranslate"><span class="pre">auto</span></code> and <code class="docutils literal notranslate"><span class="pre">brown</span></code> examples. One may see artifacts in the <code class="docutils literal notranslate"><span class="pre">perspective</span></code> Camera Lens Model in very large collections, or over very flat/homogenus terrain (agricultural fields). In such cases, forcing <code class="docutils literal notranslate"><span class="pre">brown</span></code> may help.</span><a class="headerlink" href="#id5" title="Lien permanent vers cette image"></a></p>
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</figcaption>
|
||
</figure>
|
||
</section>
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||
<section id="spherical-rectilinear-data">
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<h3><code class="docutils literal notranslate"><span class="pre">spherical</span></code> : Rectilinear Data<a class="headerlink" href="#spherical-rectilinear-data" title="Lien permanent vers ce titre"></a></h3>
|
||
<figure class="align-default" id="id6">
|
||
<img alt="Rectilinear data rendered by ``spherical`` Camera Lens Model" src="https://user-images.githubusercontent.com/19295950/127078960-27e35cbb-a378-4d0d-92e2-42dbfd1edd7c.png" />
|
||
<figcaption>
|
||
<p><span class="caption-text">This Point Cloud failed to reconstruct properly due to the manual selection of the <code class="docutils literal notranslate"><span class="pre">fisheye</span></code> Camera Lens Model. Similar failures to reconstruct can often indicate the wrong manual selection, or in edge cases, wrong <code class="docutils literal notranslate"><span class="pre">auto</span></code> selection of the Camera Lens Model, and you are advised to try another Model that is more appropriate.</span><a class="headerlink" href="#id6" title="Lien permanent vers cette image"></a></p>
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