I would very much appreciate if you can share your expertise to help me choose the affordable UAV, camera and other necessary add-ons to perform an accurate photogrammetry survey.ģ) Use free software to plan a mission and pre-configure autonomous flightĥ) Insert copter’s GPS coordinates as GPS tag of the pictures, not the camera’sĦ) Achieve at least 15 minutes flight timeħ) Configure a copter to “return home” in case of low battery alert Hello Forest Mapper and I am so glad to find someone with that much experience in using UAV for photogrammetry purpose. Website Thank you Max Messinger for describing Mission Planner’s Grid feature. Email me for more information if interested. The next hurdle is determining scale of the point cloud. The cost is pennies on the dollar compared to traditional LiDAR. I can program the photo-burst precisely for awesome 3D point clouds of specific tree crowns or structures, or wide areas. I use the mission planner trigger output to a servo attached to a LUMIX10x CMOS camera FZ7-$200 on amazon. If camera is point not 90 degrees to ground your point cloud will be significantly les dense. keep sequences registered for entire photo-burst otherwise you'll get disjointed point clouds(which can me merged with software). Just make sure prior and fore image have overlap. The structure from motion algorithm by UAW will produce a better point cloud with random overlaps and the more the better. Don't worry about overlap percentage.just take 1GB of photo-bursting over the target with lens pointed normal to ground. Just make sure you have a really fast camera. It is quite easy to generate very accurate point clouds using photo-bursts from a $200 camera.
Structure From Motion To Produce High Resolution Point CloudsĪerial Surveying For Tall Trees Using UAVs See my latest posts about photometry based point clouds.Ĭolor Coded Height Ramping For Measuring Entire Forests.Įnchanted Forest Surveyed For the First Time Ever I've been using APM2.5 and the Phantom FX-61 frame to map forests for 2 years now.
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