kopia lustrzana https://github.com/OpenDroneMap/docs
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<div class="version">
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2.5.8
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../installation/">Instalaci贸n y Gu铆a de Introducci贸n</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../installation/#hardware-recommendations">Recomendaciones de Hardware</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../installation/#installation">Instalaci贸n</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">Paso 1. Verificar el Soporte de Virtualizaci贸n</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-2-install-requirements">Paso 2. Requisitos de instalaci贸n</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-3-check-memory-and-cpu-allocation">Paso 3. Revisa la memoria y la asignaci贸n del procesador</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-4-download-webodm">Paso 4. Descarga WebODM</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-4-launch-webodm">Paso 4. Inicie WebODM</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="../installation/#macos">macOS</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#id1">Paso 1. Verificar el Soporte de Virtualizaci贸n</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#id2">Paso 2. Requisitos de instalaci贸n</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#id3">Paso 3. Revisa la memoria y la asignaci贸n del procesador</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-4-download-and-launch-webodm">Paso 4. Descargue y ejecute WebODM</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="../installation/#linux">Linux</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-1-install-requirements">Paso 1. Requerimientos de instalaci贸n</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-2-check-additional-requirements">Paso 2. Verifique los requisitos adicionales</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../installation/#step-3-download-and-launch-webodm">Paso 3. Descargue y ejecute WebODM</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="../installation/#basic-commands-and-troubleshooting">Comandos b谩sicos y resoluci贸n de problemas</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../installation/#hello-webodm">隆Hola WebODM!</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../installation/#running-on-more-than-one-machine">Ejecutando en m谩s de una m谩quina</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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</ul>
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<ul class="current">
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<li class="toctree-l1"><a class="reference internal" href="../tutorials/">Tutoriales</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../tutorials/#creating-high-quality-orthophotos">Creaci贸n de Ortofotos de Alta Calidad</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../tutorials/#calibrating-the-camera">Calibrar la c谩mara</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../tutorials/#creating-digital-elevation-models">Creaci贸n de modelos de elevaci贸n digitales</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../tutorials/#measuring-stockpile-volume">Medir el volumen de pilas de materiales a granel</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#fieldwork-planning">Planificaci贸n del trabajo de campo</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#flight-pattern">Patr贸n de vuelo</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#flight-height">Altura de vuelo</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">Par谩metros de procesamiento</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#measuring">Medici贸n</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#expected-accuracy">Precisi贸n esperada</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-docker">Usando Docker</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#listing-docker-machines">Listado de m谩quinas Docker</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#accessing-logs-on-the-instance">Accediendo a los registros en la instancia</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#command-line-access-to-instances">Acceso de l铆nea de comando a las instancias</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#cleaning-up-after-docker">Limpieza de 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-odm-from-low-bandwidth-location">Usando ODM desde una ubicaci贸n de ancho de banda bajo</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#what-is-this-and-who-is-it-for">驴Qu茅 es esto y para qui茅n es?</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../tutorials/#steps">Pasos</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../tutorials/#install">Instalaci贸n</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../tutorials/#prep-data-and-project">Datos de preparaci贸n y proyecto</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../tutorials/#resize-droplet-pull-pin-run-away">Cambie el tama帽o del Droplet, quite el seguro, huya</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../tutorials/#after-it-finishes-assuming-you-survive-that-long">Despu茅s de que termine (suponiendo que sobrevivas tanto tiempo)</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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</ul>
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</li>
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<li class="toctree-l1"><a class="reference internal" href="../arguments/">Opciones e indicadores</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/build-overviews/">build-overviews</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/camera-lens/">camera-lens</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/cameras/">cameras</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/cog/">cog</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/copy-to/">copy-to</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/crop/">crop</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/debug/">debug</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/dem-decimation/">dem-decimation</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/dem-euclidean-map/">dem-euclidean-map</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/dem-gapfill-steps/">dem-gapfill-steps</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/dem-resolution/">dem-resolution</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/depthmap-resolution/">depthmap-resolution</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/dsm/">dsm</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/dtm/">dtm</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/end-with/">end-with</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/fast-orthophoto/">fast-orthophoto</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/feature-quality/">feature-quality</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/feature-type/">feature-type</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/force-gps/">force-gps</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/gcp/">gcp</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/geo/">geo</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/gps-accuracy/">gps-accuracy</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/help/">help</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/ignore-gsd/">ignore-gsd</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/matcher-distance/">matcher-distance</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/matcher-neighbors/">matcher-neighbors</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/matcher-type/">matcher-type</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/max-concurrency/">max-concurrency</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/merge/">merge</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/mesh-octree-depth/">mesh-octree-depth</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/mesh-size/">mesh-size</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/min-num-features/">min-num-features</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/name/">name</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/optimize-disk-space/">optimize-disk-space</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/orthophoto-compression/">orthophoto-compression</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/orthophoto-cutline/">orthophoto-cutline</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/orthophoto-kmz/">orthophoto-kmz</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/orthophoto-no-tiled/">orthophoto-no-tiled</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/orthophoto-png/">orthophoto-png</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/orthophoto-resolution/">orthophoto-resolution</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-classify/">pc-classify</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-csv/">pc-csv</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-ept/">pc-ept</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-filter/">pc-filter</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-geometric/">pc-geometric</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-las/">pc-las</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-quality/">pc-quality</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-rectify/">pc-rectify</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-sample/">pc-sample</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/pc-tile/">pc-tile</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/primary-band/">primary-band</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/project-path/">project-path</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/radiometric-calibration/">radiometric-calibration</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/rerun/">rerun</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/rerun-all/">rerun-all</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/rerun-from/">rerun-from</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/resize-to/">resize-to</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/skip-3dmodel/">skip-3dmodel</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/skip-band-alignment/">skip-band-alignment</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/skip-report/">skip-report</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/sm-cluster/">sm-cluster</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/smrf-scalar/">smrf-scalar</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/smrf-slope/">smrf-slope</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/smrf-threshold/">smrf-threshold</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/smrf-window/">smrf-window</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/split/">split</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/split-image-groups/">split-image-groups</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/split-overlap/">split-overlap</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/texturing-data-term/">texturing-data-term</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/texturing-keep-unseen-faces/">texturing-keep-unseen-faces</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/texturing-outlier-removal-type/">texturing-outlier-removal-type</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/texturing-skip-global-seam-leveling/">texturing-skip-global-seam-leveling</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/texturing-skip-local-seam-leveling/">texturing-skip-local-seam-leveling</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/texturing-tone-mapping/">texturing-tone-mapping</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/tiles/">tiles</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/time/">time</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/use-3dmesh/">use-3dmesh</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/use-exif/">use-exif</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/use-fixed-camera-params/">use-fixed-camera-params</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/use-hybrid-bundle-adjustment/">use-hybrid-bundle-adjustment</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/verbose/">verbose</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../arguments/version/">version</a></li>
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</ul>
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</li>
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<li class="toctree-l1"><a class="reference internal" href="../outputs/">Salidas de OpenDroneMap</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../outputs/#point-cloud">Nube de puntos</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outputs/#d-textured-model">Modelo texturizado 3D</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outputs/#orthophoto">Ortofoto</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outputs/#dtm-dsm">DTM/DSM</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outputs/#list-of-all-outputs">Lista de todas las salidas</a></li>
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</ul>
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</li>
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<li class="toctree-l1 current"><a class="current reference internal" href="#">Puntos de Control Terrestre</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="#recommended-practices-for-gcp-setting">Pr谩cticas recomendadas para la colocaci贸n de GCP</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#gcp-file-format">Formato del archivo GCP</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#user-interfaces">Interfaces de Usuario</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="#id1">POSM GCPi</a></li>
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<li class="toctree-l3"><a class="reference internal" href="#id2">GCP Editor Pro</a></li>
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</ul>
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<li class="toctree-l2"><a class="reference internal" href="#references">Referencias</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../map-accuracy/">Precisi贸n del Mapa</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../map-accuracy/#what-to-expect">Que esperar</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../map-accuracy/#aspects-impacting-map-accuracy">Aspectos que impactan la precisi贸n del mapa</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../map-accuracy/#references">Referencias</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../geo/">Archivos de geolocalizaci贸n de imagen</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../masks/">Usar m谩scaras de imagen</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../large/">Divisi贸n de grandes conjuntos de datos</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../large/#calibrate-images">Calibrar im谩genes</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../large/#local-split-merge">Split-merge local</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../large/#distributed-split-merge">Split-Merge distribuido</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../large/#getting-started-with-distributed-split-merge">Introducci贸n a split-merge distribuido</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../large/#understanding-the-cluster">Entendiendo el Cluster</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../large/#accessing-the-logs">Acceder a los registros</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../large/#autoscaling-clusterodm">Ajuste de escala autom谩tico de ClusterODM</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../large/#limitations">Limitaciones</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../resources/">Referencias adicionales</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../resources/#for-users">Para usuarios</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../flying/">Consejos de vuelo</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../multispectral/#hardware">Hardware</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../multispectral/#usage">Uso</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../requesting-features/">C贸mo solicitar funciones</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../contributing/">Como contribuir</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../contributing/#community-forum">Foro comunitario</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../contributing/#reporting-bugs">Reportando Errores</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../contributing/#template-for-submitting-bug-reports">Plantilla Para Enviar Informes de Errores</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../contributing/#pull-requests">Solicitudes de Extraxion</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../faq/">Frequently Asked Questions</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../faq/#data-processing">Data Processing</a><ul>
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<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>
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<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>
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<a href="../_sources/gcp.rst.txt" rel="nofollow"> Ver c贸digo fuente de la p谩gina</a>
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<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
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<div itemprop="articleBody">
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<div class="section" id="ground-control-points">
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<h1>Puntos de Control Terrestre<a class="headerlink" href="#ground-control-points" title="Enlazar permanentemente con este t铆tulo">露</a></h1>
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<p>Los puntos de control terrestre son 煤tiles para corregir distorsiones en los datos y referenciarlos en sistemas de coordenadas conocidos.</p>
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<p>Un Punto de Control Terrestre (GCP por sus siglas en ingl茅s) es una medici贸n de la posici贸n hecha sobre el terreno, t铆picamente usando un GPS de alta precisi贸n (Toffanin 2019).</p>
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<p>Los puntos de control terrestres se pueden colocar en estructuras existentes como esquinas de pavimento, l铆neas en un estacionamiento o baldosas de colores contrastantes; de otra manera, se pueden configurar utilizando objetivos colocados en el suelo.</p>
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<p>Estos objetivos pueden comprarse o construirse con una amplia variedad de materiales que van desde tapas de cubetas hasta baldosas.</p>
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<div class="section" id="recommended-practices-for-gcp-setting">
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<h2>Pr谩cticas recomendadas para la colocaci贸n de GCP<a class="headerlink" href="#recommended-practices-for-gcp-setting" title="Enlazar permanentemente con este t铆tulo">露</a></h2>
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<p>Mant茅n los puntos de control terrestre visibles para todas las ubicaciones de las c谩maras. Considere la distancia de muestreo del terreno esperada, la iluminaci贸n, vegetaci贸n, edificios y todos los obst谩culos existentes.</p>
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<p>Procura una distribuci贸n horizontal uniforme de los GCP dentro del proyecto, cubriendo elevaciones altas y bajas. Un m铆nimo de 5 GCP funciona para la mayor铆a de los trabajos y para proyectos m谩s grandes, de 8 a 10 son suficientes. Ubique algunos puntos cerca de las esquinas y otros en el centro, considerando que el espaciado de los GCP debe ser mayor que la huella de la imagen para que no pueda ver m谩s de un GCP en una sola imagen.</p>
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<p>Para asegurar que cada GCP se encuentre en al menos 5 im谩genes, separa los puntos de 10 a 30 metros del per铆metro del proyecto. Esta distancia depende del traslape, por lo que aumentar el traslape deber铆a reducir la distancia requerida desde el per铆metro.</p>
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</div>
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<div class="section" id="gcp-file-format">
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<h2>Formato del archivo GCP<a class="headerlink" href="#gcp-file-format" title="Enlazar permanentemente con este t铆tulo">露</a></h2>
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<p>El formato del archivo GCP es simple.</p>
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<blockquote>
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<div><ul class="simple">
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<li><p>La primera l铆nea debe contener el nombre de la proyecci贸n usada para las coordenadas geogr谩ficas. Esto puede ser especificado con una cadena PROJ (e.g. <code class="docutils literal notranslate"><span class="pre">+proj=utm</span> <span class="pre">+zone=10</span> <span class="pre">+ellps=WGS84</span> <span class="pre">+datum=WGS84</span> <span class="pre">+units=m</span> <span class="pre">+no_defs</span></code>), un c贸digo EPSG (e.g. <code class="docutils literal notranslate"><span class="pre">EPSG:4326</span></code>) o como un valor <code class="docutils literal notranslate"><span class="pre">WGS84</span> <span class="pre">UTM</span> <span class="pre">1[N|S]</span></code> (eg. <code class="docutils literal notranslate"><span class="pre">WGS84</span> <span class="pre">UTM</span> <span class="pre">16N</span></code>)</p></li>
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<li><p>Las l铆neas siguientes son las coordinadas X, Y y Z, los pixeles asociados, el nombre del archivo de imagen y campos extras opcionales, separados por tabulaciones o espacios:</p></li>
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<li><p>Los valores de elevaci贸n pueden ser establecidos como 芦NaN禄 para indicar que no se tiene el dato.</p></li>
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<li><p>La 7a columna (opcional) t铆picamente contiene la etiqueta del GCP.</p></li>
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</ul>
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</div></blockquote>
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<p>Formato del archivo GCP:</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o"><</span><span class="n">projection</span><span class="o">></span>
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<span class="n">geo_x</span> <span class="n">geo_y</span> <span class="n">geo_z</span> <span class="n">im_x</span> <span class="n">im_y</span> <span class="n">image_name</span> <span class="p">[</span><span class="n">gcp_name</span><span class="p">]</span> <span class="p">[</span><span class="n">extra1</span><span class="p">]</span> <span class="p">[</span><span class="n">extra2</span><span class="p">]</span>
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<span class="o">...</span>
|
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</pre></div>
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</div>
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<p>Ejemplo:</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">+</span><span class="n">proj</span><span class="o">=</span><span class="n">utm</span> <span class="o">+</span><span class="n">zone</span><span class="o">=</span><span class="mi">10</span> <span class="o">+</span><span class="n">ellps</span><span class="o">=</span><span class="n">WGS84</span> <span class="o">+</span><span class="n">datum</span><span class="o">=</span><span class="n">WGS84</span> <span class="o">+</span><span class="n">units</span><span class="o">=</span><span class="n">m</span> <span class="o">+</span><span class="n">no_defs</span>
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<span class="mf">544256.7</span> <span class="mf">5320919.9</span> <span class="mi">5</span> <span class="mi">3044</span> <span class="mi">2622</span> <span class="n">IMG_0525</span><span class="o">.</span><span class="n">jpg</span>
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<span class="mf">544157.7</span> <span class="mf">5320899.2</span> <span class="mi">5</span> <span class="mi">4193</span> <span class="mi">1552</span> <span class="n">IMG_0585</span><span class="o">.</span><span class="n">jpg</span>
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<span class="mf">544033.4</span> <span class="mf">5320876.0</span> <span class="mi">5</span> <span class="mi">1606</span> <span class="mi">2763</span> <span class="n">IMG_0690</span><span class="o">.</span><span class="n">jpg</span>
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</pre></div>
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</div>
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<p>Si suministras un archivo GCP llamado <code class="docutils literal notranslate"><span class="pre">gcp_list.txt</span></code> ODM lo detectara autom谩ticamente. Si el archivo tiene otro nombre, puedes especificar usando <code class="docutils literal notranslate"><span class="pre">--gcp</span> <span class="pre">1</span></code>. Si tienes un archivo gcp y quieres georreferenciar con exif, puedes especificarlo usando <code class="docutils literal notranslate"><span class="pre">--use-exif</span></code>. Si tienes medidas GPS de alta precisi贸n en tus im谩genes (RTK) y quieres usar esa informaci贸n junto a tu archivo gcp, puedes especificarlo usando <code class="docutils literal notranslate"><span class="pre">--force-gps</span></code>.</p>
|
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<p>Este post tiene informaci贸n sobre posicionar objetivos de control terrestre previo a un vuelo.
|
|
<a class="reference external" href="http://diydrones.com/profiles/blogs/ground-control-points-gcps-for-aerial-photography">This post has some information about placing Ground Control Targets before a flight</a>, pero si ya tienes im谩genes, puedes encontrar tus propios puntos en las imagenes despues. Es importante que encuentres objetos de alto contraste que se encuentren en <strong>al menos</strong> 3 fotos, y que encuentres un m铆nimo de 5 objetos.</p>
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<p>Las esquinas definidas son buenas elecciones para GCPs. Tambi茅n debes colocar los GCP de manera uniforme alrededor del 谩rea de la medici贸n.</p>
|
|
<p>El archivo <code class="docutils literal notranslate"><span class="pre">gcp_list.txt</span></code> debe ser creado en la carpeta base de tu proyecto.</p>
|
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<p>Para buenos resultados, tu archivo debe tener un m铆nimo de 15 l铆neas despu茅s del encabezado (5 puntos con 3 im谩genes para cada punto).</p>
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</div>
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<div class="section" id="user-interfaces">
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<h2>Interfaces de Usuario<a class="headerlink" href="#user-interfaces" title="Enlazar permanentemente con este t铆tulo">露</a></h2>
|
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<p>Puedes usar una de las dos interfaces de usuario para crear archivos de GCP:</p>
|
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<blockquote>
|
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<div><ul class="simple">
|
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<li><p><a class="reference external" href="https://github.com/posm/posm-gcpi">POSM GCPi</a></p></li>
|
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<li><p><cite>GCP Editor Pro <https://github.com/uav4geo/GCPEditorPro></cite></p></li>
|
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</ul>
|
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</div></blockquote>
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<div class="section" id="id1">
|
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<h3>POSM GCPi<a class="headerlink" href="#id1" title="Enlazar permanentemente con este t铆tulo">露</a></h3>
|
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<p>POSM GCPi esta cargado automaticamente en WebODM. Un ejemplo esta disponible en <a class="reference external" href="http://demo.webodm.org/plugins/posm-gcpi/">the WebODM Demo</a>. Para usarlo con valores XYZ de control terrestre conocidos, se har铆a lo siguiente:</p>
|
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<p>Crear una lista GCP, que solo incluya el nombre gcp (esta es la etiqueta que se ver谩 en la interfaz GCP), x, y, y z, con un t铆tulo con una cadena de caracteres proj4 de sus GCPs (asegurese de que est谩n es un sistema de coordenadas plano, como UTM. Deber铆a verse algo as铆:</p>
|
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">+</span><span class="n">proj</span><span class="o">=</span><span class="n">utm</span> <span class="o">+</span><span class="n">zone</span><span class="o">=</span><span class="mi">37</span> <span class="o">+</span><span class="n">south</span> <span class="o">+</span><span class="n">ellps</span><span class="o">=</span><span class="n">WGS84</span> <span class="o">+</span><span class="n">datum</span><span class="o">=</span><span class="n">WGS84</span> <span class="o">+</span><span class="n">units</span><span class="o">=</span><span class="n">m</span> <span class="o">+</span><span class="n">no_defs</span>
|
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<span class="n">gcp01</span> <span class="mf">529356.250827686</span> <span class="mf">9251137.5643209</span> <span class="mf">8.465</span>
|
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<span class="n">gcp02</span> <span class="mf">530203.125367657</span> <span class="mf">9250140.80991621</span> <span class="mf">15.781</span>
|
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<span class="n">gcp03</span> <span class="mf">530292.136003818</span> <span class="mf">9250745.02372435</span> <span class="mf">11.977</span>
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<span class="n">gcp04</span> <span class="mf">530203.125367657</span> <span class="mf">9250140.80991621</span> <span class="mf">15.781</span>
|
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<span class="n">gcp05</span> <span class="mf">530292.136003818</span> <span class="mf">9250745.02372435</span> <span class="mf">11.977</span>
|
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</pre></div>
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</div>
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<p>Despu茅s se puede cargar la lista GCP en la interfaz, cargar las im谩genes y colocar cada uno de los GCPs en la imagen.</p>
|
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</div>
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<div class="section" id="id2">
|
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<h3>GCP Editor Pro<a class="headerlink" href="#id2" title="Enlazar permanentemente con este t铆tulo">露</a></h3>
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<p>Esta aplicaci贸n necesita ser instalada separadamente o puede ser cargada como un plugin WebODM desde <a class="reference external" href="https://github.com/uav4geo/GCPEditorPro">https://github.com/uav4geo/GCPEditorPro</a></p>
|
|
<p>Crear un archivo csv que incluya el nombre gcp, el norte, el este y la elevaci贸n.</p>
|
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">GCP</span> <span class="n">Label</span><span class="p">,</span><span class="n">Northing</span><span class="p">,</span><span class="n">Easting</span><span class="p">,</span><span class="n">Elevation</span>
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<span class="n">gcp01</span><span class="p">,</span><span class="mf">529356.250827686</span><span class="p">,</span><span class="mf">9251137.5643209</span><span class="p">,</span><span class="mf">8.465</span>
|
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<span class="n">gcp02</span><span class="p">,</span><span class="mf">530203.125367657</span><span class="p">,</span><span class="mf">9250140.80991621</span><span class="p">,</span><span class="mf">15.781</span>
|
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<span class="o">...</span>
|
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</pre></div>
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</div>
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<p>Luego importar el archivo CSV desde la pantalla principal y escribir <code class="docutils literal notranslate"><span class="pre">+proj=utm</span> <span class="pre">+zone=37</span> <span class="pre">+south</span> <span class="pre">+ellps=WGS84</span> <span class="pre">+datum=WGS84</span> <span class="pre">+units=m</span> <span class="pre">+no_defs</span></code> en el cuadro <code class="docutils literal notranslate"><span class="pre">EPSG/PROJ</span></code> .</p>
|
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<p>La siguiente pantalla va a mostrar un mapa desde donde se puede seleccionar los GCPs a etiquetar e importar las respectivas im谩genes.</p>
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</div>
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</div>
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<div class="section" id="references">
|
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<h2>Referencias<a class="headerlink" href="#references" title="Enlazar permanentemente con este t铆tulo">露</a></h2>
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<p>Toffanin, Piero. <a class="reference external" href="https://odmbook.com/">Open Drone Map: The Missing Guide.</a> MasseranoLabs LLC, 2019.</p>
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<p><a class="reference external" href="https://github.com/opendronemap/docs#how-to-make-your-first-contribution">Aprende a editar</a> y ayuda a mejorar <a class="reference external" href="https://github.com/OpenDroneMap/docs/blob/publish/source/gcp.rst">esta p谩gina</a>!</p>
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