Questions and Answers
What percentage of the image should be ground when flying a low-level orbit?
What is the minimum number of orbits required to ensure sufficient overlap between images?
What feature should be used to take a second-long photo during an orbit?
Why is overlap crucial when creating a 3D model?
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What is the purpose of identifying emergency landing spots?
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Why should you avoid capturing highways in images?
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What is the purpose of using radio etiquette during the mission?
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At what altitude should the top orbit be established?
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Study Notes
Flying Orbits and Aerial Imagery
- To fly a low-level orbit, tilt the camera down to avoid capturing the sky, and aim for 20% of the image to be ground.
- Start by flying around the whole building, then elevate 15 ft and tilt the camera down again, not exceeding 15°.
- Repeat this process to maintain a minimum of three orbits, ensuring at least three images capture the corner of the building.
Importance of Overlap
- The goal is to maintain a minimum of three orbits to ensure sufficient overlap between images.
- Overlap is crucial for creating a 3D model, especially when dealing with complex structures.
Using DJI Go and Point of Interest Mode
- Set the point of interest over the top of the building using DJI Go and Point of Interest mode.
- Set the radius to ensure the whole building is captured, and then hit "go" to start the orbit.
Time Shot Feature and Image Capture
- Use the Time Shot feature under Photos to take a second-long photo, and then click the photo button once to continue capturing images during the orbit.
- The drone will take multiple images during the orbit, which will be used to create a 3D model.
Emergency Landing Spots and Safety
- Identify primary and secondary emergency landing spots to ensure safety in case of an unexpected event.
- Be aware of obstacles such as power lines, roads, and trees, and plan accordingly.
Mocha and Altitude
- Set the mocha (Minimum Obstacle Clearance Altitude) at 20 ft above the highest point in the area, which is 70 ft in this case.
- Establish a top orbit at 80 ft AGL to ensure good imagery and clearance from obstacles.
Image Capture and Avoidance
- Avoid capturing the sky and highways in the images, as they can cause issues with the 3D model.
- Use techniques to remove motion blur from the images if necessary.
Radio Etiquette and Communication
- Use radio etiquette to ensure clear communication during the mission.
- Request a brief call back from the VO to confirm receipt of commands.
- Use a standardized format for radio calls, such as "Team 3 to VO Drone 1, 40 ft AGL, counterclockwise."
Flying Orbits and Aerial Imagery
- For low-level orbits, tilt the camera down to avoid capturing the sky, aiming for 20% of the image to be ground.
- Fly around the whole building, then elevate 15 ft and tilt the camera down again, not exceeding 15°.
- Repeat this process to maintain a minimum of three orbits, ensuring at least three images capture the corner of the building.
Importance of Overlap
- A minimum of three orbits is required to ensure sufficient overlap between images.
- Overlap is crucial for creating a 3D model, especially when dealing with complex structures.
Using DJI Go and Point of Interest Mode
- Use DJI Go and Point of Interest mode to set the point of interest over the top of the building.
- Set the radius to ensure the whole building is captured, then hit "go" to start the orbit.
Time Shot Feature and Image Capture
- Use the Time Shot feature under Photos to take a second-long photo, then click the photo button once to continue capturing images during the orbit.
- The drone will take multiple images during the orbit, which will be used to create a 3D model.
Emergency Landing Spots and Safety
- Identify primary and secondary emergency landing spots to ensure safety in case of an unexpected event.
- Be aware of obstacles such as power lines, roads, and trees, and plan accordingly.
Mocha and Altitude
- Set the mocha (Minimum Obstacle Clearance Altitude) at 20 ft above the highest point in the area.
- Establish a top orbit at 80 ft AGL to ensure good imagery and clearance from obstacles.
Image Capture and Avoidance
- Avoid capturing the sky and highways in the images, as they can cause issues with the 3D model.
- Use techniques to remove motion blur from the images if necessary.
Radio Etiquette and Communication
- Use radio etiquette to ensure clear communication during the mission.
- Request a brief call back from the VO to confirm receipt of commands.
- Use a standardized format for radio calls, such as "Team 3 to VO Drone 1, 40 ft AGL, counterclockwise."
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Description
Learn how to capture aerial images by flying low-level orbits around a building, maintaining a minimum of three orbits to ensure sufficient overlap and coverage.
