Once the plan was sent to the drone

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The flight was executed autonomously, with the camera intervalometer activated to take images every 3 seconds. This meant that, once taken off, the drone reached each geo-positioned point without needing to be controlled by the pilot through a radio-frequency remote control,

Mission Planner was used to monitor the UAV’s conditions in real time during flight, as well as to validate the trajectory it was following, among other data. Figure 3 shows an example of how “live” information is obtained from the drone during an autonomous flight.

Figure 3. Live data capture monitoring.

Image processing
Once the images were captured, the Agisoft PhotoScan Pro application was used benin phone number data to perform the processing, verify the quality of the acquired images (through an overlap report), generate the final orthomap, as well as the three-dimensional model and the export of a KML file to feed Google Earth.

The individual images had a resolution of 1200 x 1600 pixels. The tool used for image processing reported a resolution of 2.5 cm per pixel. For the exact calculation of the ratio of centimeters per pixel, more advanced formal techniques exist, however, these were outside the scope of this case study.