kopia lustrzana https://github.com/OpenDroneMap/docs
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<title>Map accuracy — OpenDroneMap 3.5.3 documentation</title>
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<a href="../" class="icon icon-home"> OpenDroneMap
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3.5.3
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<li class="toctree-l1"><a class="reference internal" href="../installation/">Installation and Getting Started</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../installation/#quickstart">Quickstart</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../installation/#hardware-recommendations">Hardware Recommendations</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../installation/#installation">Installation</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../installation/#windows">Windows</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-1-check-virtualization-support">Step 1. Check Virtualization Support</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-2-install-requirements">Step 2. Install Requirements</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-3-check-memory-and-cpu-allocation">Step 3. Check Memory and CPU Allocation</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-4-download-webodm">Step 4. Download WebODM</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-4-launch-webodm">Step 4. Launch WebODM</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../installation/#macos">macOS</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#id1">Step 1. Check Virtualization Support</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#id2">Step 2. Install Requirements</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#id3">Step 3. Check Memory and CPU Allocation</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-4-download-and-launch-webodm">Step 4. Download and Launch WebODM</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../installation/#linux">Linux</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-1-install-requirements">Step 1. Install Requirements</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-2-check-additional-requirements">Step 2. Check Additional Requirements</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-3-download-and-launch-webodm">Step 3. Download and Launch WebODM</a></li>
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</ul>
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<li class="toctree-l2"><a class="reference internal" href="../installation/#basic-commands-and-troubleshooting">Basic Commands and Troubleshooting</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../installation/#hello-webodm">Hello, WebODM!</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../installation/#running-on-more-than-one-machine">Running on more than one machine</a></li>
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</ul>
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<ul class="current">
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<li class="toctree-l1"><a class="reference internal" href="../tutorials/">Tutorials</a><ul>
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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/#fieldwork-planning">Fieldwork planning</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#flight-pattern">Flight pattern</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#flight-height">Flight height</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#gcps">GCPs</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#processing-parameters">Processing parameters</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#measuring">Measuring</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#expected-accuracy">Expected accuracy</a></li>
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</ul>
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<li class="toctree-l2"><a class="reference internal" href="../tutorials/#using-docker">Using Docker</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#listing-docker-machines">Listing Docker Machines</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#accessing-logs-on-the-instance">Accessing logs on the instance</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#command-line-access-to-instances">Command line access to instances</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#cleaning-up-after-docker">Cleaning up after Docker</a></li>
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</ul>
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</li>
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<li class="toctree-l2"><a class="reference internal" href="../tutorials/#using-singularity">Using Singularity</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#downloading-image">Downloading image</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#using-singularity-sif-image">Using Singularity SIF image</a></li>
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</ul>
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</li>
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<li class="toctree-l2"><a class="reference internal" href="../tutorials/#using-odm-from-low-bandwidth-location">Using ODM from low-bandwidth location</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#what-is-this-and-who-is-it-for">What is this and who is it for?</a></li>
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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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</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="../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>
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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-l4"><a class="reference internal" href="../tutorials/#navigation">Navigation</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="../tutorials/#scene">Scene</a></li>
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</ul>
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</li>
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<li class="toctree-l2"><a class="reference internal" href="../tutorials/#clusterodm-nodeodm-slurm-with-singularity-on-hpc">ClusterODM, NodeODM, SLURM, with Singularity on HPC</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#downloading-and-installing-the-images">Downloading and installing the images</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../tutorials/#clusterodm">ClusterODM</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../tutorials/#nodeodm">NodeODM</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="../tutorials/#launching">Launching</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../tutorials/#id1">NodeODM</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../tutorials/#id2">ClusterODM</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="../tutorials/#connecting-nodes-to-clusterodm">Connecting Nodes to ClusterODM</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../tutorials/#web-interface">Web interface</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../tutorials/#telnet">telnet</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="../tutorials/#using-clusterodm-and-its-nodeodms">Using ClusterODM and its NodeODMs</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-l1"><a class="reference internal" href="../arguments/">Options and Flags</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/3d-tiles/">3d-tiles</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/align/">align</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/auto-boundary/">auto-boundary</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../arguments/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="../arguments/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="../arguments/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="../arguments/auto-boundary/#example-images">Example Images</a><ul>
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||
<li class="toctree-l4"><a class="reference internal" href="../arguments/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="../arguments/auto-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="../arguments/auto-boundary-distance/">auto-boundary-distance</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/bg-removal/">bg-removal</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/boundary/">boundary</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../arguments/boundary/#what-is-boundary-geojson">What is Boundary [GeoJSON]?</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../arguments/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="../arguments/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="../arguments/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="../arguments/boundary/#geojson-io">GeoJSON.io</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../arguments/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="../arguments/boundary/#example-images">Example Images</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../arguments/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="../arguments/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="../arguments/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>
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<li class="toctree-l4"><a class="reference internal" href="../arguments/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>
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<li class="toctree-l4"><a class="reference internal" href="../arguments/boundary/#false-null">False: <code class="docutils literal notranslate"><span class="pre">null</span></code></a></li>
|
||
</ul>
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||
</li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/build-overviews/">build-overviews</a><ul>
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||
<li class="toctree-l3"><a class="reference internal" href="../arguments/build-overviews/#what-are-overviews">What Are Overviews?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../arguments/build-overviews/#when-are-overviews-appropriate">When are Overviews appropriate?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../arguments/build-overviews/#why-would-one-use-overviews">Why would one use Overviews?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../arguments/build-overviews/#example-images">Example Images</a><ul>
|
||
<li class="toctree-l4"><a class="reference internal" href="../arguments/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="../arguments/build-overviews/#false-null">False: <code class="docutils literal notranslate"><span class="pre">null</span></code></a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/camera-lens/">camera-lens</a><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../arguments/camera-lens/#what-are-camera-lens-models">What Are Camera Lens Models?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../arguments/camera-lens/#when-are-manual-selections-appropriate">When are manual selections appropriate?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../arguments/camera-lens/#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="../arguments/camera-lens/#example-images">Example Images</a><ul>
|
||
<li class="toctree-l4"><a class="reference internal" href="../arguments/camera-lens/#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="../arguments/camera-lens/#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="../arguments/camera-lens/#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="../arguments/camera-lens/#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="../arguments/camera-lens/#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="../arguments/cameras/">cameras</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/cog/">cog</a><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../arguments/cog/#what-are-cloud-optimized-geotiffs-cogs">What Are Cloud Optimized GeoTIFFs (COGs)?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../arguments/cog/#when-are-cogs-appropriate">When are COGs appropriate?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../arguments/cog/#why-would-one-use-cogs">Why would one use COGs?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../arguments/cog/#example-images">Example Images</a><ul>
|
||
<li class="toctree-l4"><a class="reference internal" href="../arguments/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="../arguments/cog/#false-null">False: <code class="docutils literal notranslate"><span class="pre">null</span></code></a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/copy-to/">copy-to</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/crop/">crop</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/debug/">debug</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/dem-decimation/">dem-decimation</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/dem-euclidean-map/">dem-euclidean-map</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/dem-gapfill-steps/">dem-gapfill-steps</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/dem-resolution/">dem-resolution</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/depthmap-resolution/">depthmap-resolution</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/dsm/">dsm</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/dtm/">dtm</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/end-with/">end-with</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/fast-orthophoto/">fast-orthophoto</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/feature-quality/">feature-quality</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/feature-type/">feature-type</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/force-gps/">force-gps</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/gcp/">gcp</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/geo/">geo</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/gltf/">gltf</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/gps-accuracy/">gps-accuracy</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/help/">help</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/ignore-gsd/">ignore-gsd</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/matcher-neighbors/">matcher-neighbors</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/matcher-order/">matcher-order</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/matcher-type/">matcher-type</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/max-concurrency/">max-concurrency</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/merge/">merge</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/mesh-octree-depth/">mesh-octree-depth</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/mesh-size/">mesh-size</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/min-num-features/">min-num-features</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/name/">name</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/no-gpu/">no-gpu</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/optimize-disk-space/">optimize-disk-space</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/orthophoto-compression/">orthophoto-compression</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/orthophoto-cutline/">orthophoto-cutline</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/orthophoto-kmz/">orthophoto-kmz</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/orthophoto-no-tiled/">orthophoto-no-tiled</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/orthophoto-png/">orthophoto-png</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/orthophoto-resolution/">orthophoto-resolution</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-classify/">pc-classify</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-copc/">pc-copc</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-csv/">pc-csv</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-ept/">pc-ept</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-filter/">pc-filter</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-geometric/">pc-geometric</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-las/">pc-las</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-quality/">pc-quality</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-rectify/">pc-rectify</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-sample/">pc-sample</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-skip-geometric/">pc-skip-geometric</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-tile/">pc-tile</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/primary-band/">primary-band</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/project-path/">project-path</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/radiometric-calibration/">radiometric-calibration</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/rerun/">rerun</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/rerun-all/">rerun-all</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/rerun-from/">rerun-from</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/resize-to/">resize-to</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/rolling-shutter/">rolling-shutter</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/rolling-shutter-readout/">rolling-shutter-readout</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/sfm-algorithm/">sfm-algorithm</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/sfm-no-partial/">sfm-no-partial</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/skip-3dmodel/">skip-3dmodel</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/skip-band-alignment/">skip-band-alignment</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/skip-orthophoto/">skip-orthophoto</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/skip-report/">skip-report</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/sky-removal/">sky-removal</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/sm-cluster/">sm-cluster</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/sm-no-align/">sm-no-align</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/smrf-scalar/">smrf-scalar</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/smrf-slope/">smrf-slope</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/smrf-threshold/">smrf-threshold</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/smrf-window/">smrf-window</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/split/">split</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/split-image-groups/">split-image-groups</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/split-overlap/">split-overlap</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/texturing-data-term/">texturing-data-term</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/texturing-keep-unseen-faces/">texturing-keep-unseen-faces</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/texturing-outlier-removal-type/">texturing-outlier-removal-type</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/texturing-single-material/">texturing-single-material</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/texturing-skip-global-seam-leveling/">texturing-skip-global-seam-leveling</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/texturing-skip-local-seam-leveling/">texturing-skip-local-seam-leveling</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/texturing-tone-mapping/">texturing-tone-mapping</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/tiles/">tiles</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/time/">time</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/use-3dmesh/">use-3dmesh</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/use-exif/">use-exif</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/use-fixed-camera-params/">use-fixed-camera-params</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/use-hybrid-bundle-adjustment/">use-hybrid-bundle-adjustment</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/verbose/">verbose</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/version/">version</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/video-limit/">video-limit</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../arguments/video-resolution/">video-resolution</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../flowchart/">Flowchart with options</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../outputs/">OpenDroneMap Outputs</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../outputs/#point-cloud">Point Cloud</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../outputs/#d-textured-model">3D Textured Model</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../outputs/#orthophoto">Orthophoto</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../outputs/#dtm-dsm">DTM/DSM</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../outputs/#logs">Logs</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../outputs/#list-of-all-outputs">List of all outputs</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../gcp/">Ground Control Points</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../gcp/#recommended-practices-for-gcp-setting">Recommended practices for GCP setting</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../gcp/#gcp-file-format">GCP file format</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../gcp/#user-interfaces">User Interfaces</a><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../gcp/#id1">POSM GCPi</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../gcp/#id2">GCP Editor Pro</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../gcp/#references">References</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1 current"><a class="current reference internal" href="#">Map accuracy</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="#what-to-expect">What to expect</a><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="#aspects-impacting-map-accuracy">Aspects impacting map accuracy</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="#references">References</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../geo/">Image Geolocation Files</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../align/">Alignment Files</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../masks/">Using Image Masks</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../large/">Splitting Large Datasets</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../large/#calibrate-images">Calibrate images</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../large/#local-split-merge">Local Split-Merge</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../large/#distributed-split-merge">Distributed Split-Merge</a><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../large/#getting-started-with-distributed-split-merge">Getting Started with Distributed Split-Merge</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../large/#understanding-the-cluster">Understanding the Cluster</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../large/#accessing-the-logs">Accessing the Logs</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../large/#autoscaling-clusterodm">Autoscaling ClusterODM</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../large/#limitations">Limitations</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../large/#estimating-data-collection-effort">Estimating data collection effort</a><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../large/#data-collection-effort-full-3d">Data collection effort, full 3D</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../large/#data-collection-effort-2d-and-2-5d-products">Data collection effort, 2D and 2.5D products</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../large/#acknowledgments">Acknowledgments</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../resources/">Additional References</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../resources/#for-users">For Users</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../resources/#for-developers">For Developers</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../flying/">Flying Tips</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../flying/#data-collection-effort-full-3d">Data collection effort, full 3D</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../flying/#data-collection-effort-2d-and-2-5d-products">Data collection effort, 2D and 2.5D products</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../flying/#other-resources-on-flying">Other resources on flying</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../multispectral/">Multispectral Support</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../multispectral/#supported-sensors">Supported Sensors</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../multispectral/#creating-orthophotos-from-multispectral-data">Creating Orthophotos from Multispectral Data</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../multispectral/#workflows-for-non-supported-sensors">Workflows for Non-supported Sensors</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../thermal/">Thermal Support</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../thermal/#hardware">Hardware</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../thermal/#usage">Usage</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../requesting-features/">How To Request Features</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../contributing/">How To Contribute</a><ul>
|
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<li class="toctree-l2"><a class="reference internal" href="../contributing/#community-forum">Community Forum</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../contributing/#reporting-bugs">Reporting Bugs</a><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../contributing/#template-for-submitting-bug-reports">Template For Submitting Bug Reports</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../contributing/#pull-requests">Pull Requests</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../faq/">Frequently Asked Questions</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../faq/#data-processing">Data Processing</a><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../faq/#can-i-process-two-or-more-orthophoto-geotiffs-to-stitch-them-together">Can I process two or more orthophoto GeoTIFFs to stitch them together?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../faq/#the-software-is-not-using-all-of-my-cpu-cores-memory-gpu-all-of-the-times-is-it-normal">The software is not using all of my CPU cores / memory / GPU all of the times. Is it normal?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../faq/#if-i-use-the-native-version-of-the-software-how-can-i-allocate-more-resources-for-processing">If I use the native version of the software, how can I allocate more resources for processing?</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../faq/#licensing">Licensing</a><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../faq/#i-want-to-build-a-commercial-application-that-includes-odm-do-i-need-a-commercial-license">I want to build a commercial application that includes ODM. Do I need a commercial license?</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../faq/#are-there-other-licensing-options-aside-from-the-agplv3">Are there other licensing options aside from the AGPLv3?</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../faq/#memory-issues">Memory issues</a><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../faq/#your-computer-is-running-out-of-memory-what-can-you-do">Your computer is running out of memory, what can you do?</a></li>
|
||
</ul>
|
||
</li>
|
||
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|
||
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|
||
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<section id="map-accuracy">
|
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<h1>Map accuracy<a class="headerlink" href="#map-accuracy" title="Permalink to this heading"></a></h1>
|
||
<p>Accuracy can be defined as the degree or closeness to which the information on a map matches the values in the real world. Therefore, when we refer to accuracy, we are talking about quality of data and about number of errors contained in a certain dataset (Pascual 2011).</p>
|
||
<p><strong>Relative or Local accuracy</strong></p>
|
||
<p>Local or relative accuracy can be defined as the degree to which de distances between two points on a map correspond to the actually distances between those points in the real world.</p>
|
||
<p>Relative accuracy is independent of the location of the map in the world, so a map can have a high relative accuracy (in size and shape) but its position in the world can be shifted (Figure 1).</p>
|
||
<figure class="align-center">
|
||
<img alt="Model showing high relative accuracy" src="../_images/rel_accuracy.png" />
|
||
</figure>
|
||
<p><em>Figure 1. Model showing high relative accuracy but misplaced according to its real world position</em></p>
|
||
<p><strong>Absolute or global Accuracy</strong></p>
|
||
<p>Absolute accuracy is the accuracy of the reconstruction in relation to its true position on the planet (Pix4D 2019). Figure 2 shows a relative and absolute accurate model, as the points are correctly placed according to its real world position.</p>
|
||
<figure class="align-center">
|
||
<img alt="Model showing high absolute accuracy" src="../_images/abs_accuracy.png" />
|
||
</figure>
|
||
<p><em>Figure 2. Model showing high relative and absolute accuracy. Placed correctly according to its real world position</em></p>
|
||
<p><strong>An Accuracy level for each project</strong></p>
|
||
<p>Each project has specific accuracy needs to be met. For instance assessing the progress in a construction site or measuring an area affected by a fire does not require the use of GCP, since absolute accuracy will not impact the decision making process. In the other hand, there are tasks on which accuracy is critical, for example project compliance evaluations and land title surveying, which require a higher relative and absolute accuracy.</p>
|
||
<section id="what-to-expect">
|
||
<h2>What to expect<a class="headerlink" href="#what-to-expect" title="Permalink to this heading"></a></h2>
|
||
<p>In general terms, one can expect the relative accuracy to be in the order of 1 to 3 times the average GSD for the dataset. And as for the absolute accuracy, one must consider that it is dependent of the GPS unit mounted in the UAV but the horizontal accuracy of a standard GPS is usually in the range of 2 to 6 meters and the vertical accuracy between 3 to 4 times the horizontal accuracy.</p>
|
||
<p>When using GCP, absolute accuracy can be improved to 2.5 times GSD for the horizontal accuracy and 4 times the GSD for the vertical accuracy (Madawalagama 2016).</p>
|
||
<p>At a GSD of 1cm, the accuracy is to that of the RTK GNSS, and is within 1:200 scales according to NSDI & FGDC mapping accuracy standards during sub-optimal conditions (Barry 2013).</p>
|
||
<section id="aspects-impacting-map-accuracy">
|
||
<h3>Aspects impacting map accuracy<a class="headerlink" href="#aspects-impacting-map-accuracy" title="Permalink to this heading"></a></h3>
|
||
<p><strong>Weather</strong></p>
|
||
<p>Weather conditions have direct impact in the photogrammetry results, so it is important to consider cloud coverage, wind speed, humidity, sun’s altitude and other factors influencing the UAV stability and terrain illumination.</p>
|
||
<p><strong>Cameras</strong></p>
|
||
<p>Bigger and better sensors produce less noise and more clearly focused images. Also consider that rolling shutter cameras produce distorted images when the UAV is moving, so global or mechanical shutter cameras are advised for mapping jobs.</p>
|
||
<p><strong>Flight altitude</strong></p>
|
||
<p>The higher the flight altitude, the larger the image footprint and GSD. The resulting larger GSD the accuracy will be decreased as there will be less detail in the recognizable features. When a smaller GSD is required an altitude of 3 to 4 times the height of the highest point is recommended.</p>
|
||
<p><strong>Flight speed</strong></p>
|
||
<p>Flight speed have special effect in cameras equipped with rolling shutter, while those equipped with global or mechanical shutter tends to reduce this effect. UAV equipped with RTK positioning systems are also affected with the speed, but with hover at each photo taken, you can get very good accuracy. If instead you are moving during each photo take, the accuracy is going to be limited by two factors: the speed at which you are moving multiplied by the 1 second increments of RTK (Mather 2020).</p>
|
||
</section>
|
||
</section>
|
||
<section id="references">
|
||
<h2>References<a class="headerlink" href="#references" title="Permalink to this heading"></a></h2>
|
||
<p>Barry, P., & Coakley, R. «Accuracy of UAV photogrammetry compared with Network RTK GPS.» Baseline Surveys. 2013. <a class="reference external" href="http://uav.ie/PDF/Accuracy_UAV_compare_RTK_GPS.pdf">http://uav.ie/PDF/Accuracy_UAV_compare_RTK_GPS.pdf</a> (accessed 10 13, 2020).</p>
|
||
<p>Drone Deploy. How Do I Use Ground Control Points?: A guide to using ground control points with drone mapping software. 5 8, 2017. <a class="reference external" href="https://www.dronedeploy.com/blog/what-are-ground-control-points-gcps/">https://www.dronedeploy.com/blog/what-are-ground-control-points-gcps/</a> (accessed 7 9, 2020).</p>
|
||
<p>Madawalagama, S.L., Munasinghe, N., Dampegama, S.D.P.J. and Samarakoon, L. «Low-cost aerial mapping with consumer grade.» 37th Asian Conference on Remote Sensing. Colombo, Sri Lanka, 2016.</p>
|
||
<p>Mather, Stephen. OpenDroneMap. 30 de Marzo de 2020. <a class="reference external" href="https://community.opendronemap.org/t/the-accuracy-of-webodm-using-rtk-uavs/3937">https://community.opendronemap.org/t/the-accuracy-of-webodm-using-rtk-uavs/3937</a> (accessed 10 12, 2020).</p>
|
||
<p>Pascual, Manuel S. GIS Lounge: GIS Data: A Look at Accuracy, Precision, and Types of Errors. 11 6, 2011. <a class="reference external" href="https://www.gislounge.com/gis-data-a-look-at-accuracy-precision-and-types-of-errors/">https://www.gislounge.com/gis-data-a-look-at-accuracy-precision-and-types-of-errors/</a> (accessed 07 09, 2020).</p>
|
||
<p>Pix4D. «What is accuracy in an aerial mapping project?» Pix4D. 25 de 05 de 2019. <a class="reference external" href="https://www.pix4d.com/blog/accuracy-aerial-mapping">https://www.pix4d.com/blog/accuracy-aerial-mapping</a> (accessed 10 13, 2020).</p>
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<p><a class="reference external" href="https://github.com/opendronemap/docs#how-to-make-your-first-contribution">Learn to edit</a> and help improve <a class="reference external" href="https://github.com/OpenDroneMap/docs/blob/publish/source/map-accuracy.rst">this page</a>!</p>
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