π‘ The specification and purchase price range for drone purchase may vary depending on the construction stage of the construction site and the budget situation of the project. Reflecting these diverse needs in the field, the Meissa platform supports the connection and upload of various commercial drone data.
The Meissa platform has a flexible structure that can connect data from various drone manufacturers. This allows you to easily collect and upload drone data by selecting a drone that suits the situation on the site.
0.1.1 Meissa-supported drone type
- DJI Mavic 3 Enterprise
- Recommended for drone flight beginners
- Can be used in small to medium-sized sites
- 45 minutes of flight time
- 20MP camera (mechanical shutter)
- 15km range
- 950g (including battery weight)
- Supports RTK & PPK location tagging
- DJI Phantom 4 RTK
- Recommended for drone flight beginners
- Can be used in small to medium-sized sites
- 30 minutes of flight time
- 20MP camera
- 7km range
- 1391g (including battery weight)
- Supports RTK & PPK location tagging
- DJI Phantom 4 Pro V2.0
- Recommended for drone flight beginners
- Can be used in small to medium-sized sites
- 30 minutes of flight time
- 20MP camera (mechanical shutter)
- 7km range
- Mavic 2 pro
- Recommended for drone flight beginners
- Can be used in small to medium-sized sites
- 30 minutes of flight time
- 20MP camera
- 12km range
- EVO 2 PRO V3.0
- Recommended for drone flight beginners
- Can be used in small to medium-sized sites
- 40 minutes of flight time
- 20MP camera
- 9km range
Data processing and precautions
To use drone data, you must follow the following precautions.
π‘ Image format
All images must be in JPG format to be used with drone data. Other formats of images may not be processed.
GPS EXIF data
Images must have latitude, longitude, and altitude in the GPS EXIF data. GPS EXIF data contains the location information of the image. Images without GPS EXIF data may not be processed.
Number of images
There must be at least 30 images. If the number of images is less, generating an accurate 3D model may be difficult.
Overlap
The overlap of the images is recommended to be 80% SIDE OVERLAP and 80% FRONT OVERLAP. Overlap refers to the degree to which images overlap each other. The higher the overlap, the more accurate the 3D model can be generated.
Supported cameras and sensors
It does not matter if the photo is in JPG format with GPS information, including the camera and camera sensor.
Notes
- How to check GPS EXIF data in images:
- When you upload images to the platform, the images will be displayed on the satellite map.
- After installing the program called "QGIS", you can drag the photo to import it and check the properties of the photo, and you can check the data there.
- One of the ways to check photo data is to go to http://metadata2go.com/ and drag the photo to check.
- Additional explanation of overlap:
- SIDE OVERLAP (recommended setting: 80%) Adjusts the spacing and number of flight paths. The higher the overlap, the more the photos between the paths overlap, resulting in higher accuracy.
- FRONT OVERLAP (recommended setting: 80%) Adjusts the vertical overlap of photos taken while moving forward. The higher the overlap, the higher the accuracy, but the number of shots may increase and the flight time may be longer.
- Overlap and accuracy Overlap refers to the degree to which images overlap each other. The higher the overlap, the more the images overlap each other, resulting in higher accuracy. However, it is not good to increase the overlap arbitrarily. If the overlap is too high, the number of shots may increase and the flight time may be longer, which may increase costs and time. In addition, even if the overlap is high, the accuracy may decrease if the image quality is low.
Supported cameras and sensors
- Any JPG image with GPS information, including the camera and camera sensor, is supported.
Drone control
β Drones are controlled by using the sticks and buttons on the controller. In general, all drones have the same basic control methods. Assuming that there are no separate mode settings, the basic control methods are as follows.
1. Power on
- Turn on the power of the battery attached to the drone. (Shortly once + long press)
- Pull both joysticks on the controller inward (left side to the lower right, right side to the lower left) to start.
2. Takeoff
- Raise the left joystick up to ascend.
3. Flight
- Use the left joystick and right joystick to move the drone in the desired direction.
4. Landing
- Lower the left joystick and use the throttle button to descend the drone.
- Joystick control details
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Left joystick
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Up, down: Ascend, descend the drone body
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Left and right: Rotation of the drone body
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Right joystick
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Movement of the drone body in the direction
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Left top dial
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Camera angle control
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Right top dial
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Camera zoom in/out
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Precautions
- Fly in a safe place. Fly in an area without people, and make sure there are no other people or obstacles.
- Secure your vision. Always keep an eye on your surroundings when operating a drone, and avoid flying in environments where visibility is difficult.
- Check the weather. Avoid flying on days with strong winds, rain, or snow.
- Fly after sufficient practice. If you are new to operating a drone, practice in a safe area before you start flying.
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Additional tips
- Mode setting: There are various modes for drones. By understanding the functions of each mode and selecting the appropriate mode for the situation, you can operate the drone more safely and effectively.
- Route setting: You can set up an autonomous route flight for the shooting target by using the manual flight mode.
- Drone management: Drones must be regularly inspected and maintained. Check the major components of the drone, such as the battery, motor, and propeller, on a regular basis, and replace them as needed.
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