| Title |
Evaluate the Accuracy of Drone Photogrammetry Surveying Using Water Reference Points |
| Authors |
김병우(Kim, Byungwoo) ; 홍순헌(Hong, Soonheon) ; 오재현(Oh, Jaehyun) ; 황대영(Hwang, Daeyoung) |
| DOI |
https://doi.org/10.12652/Ksce.2017.37.2.0445 |
| Keywords |
드론;드론 수상측량;수상기준점;정확도;영상정합 Drone;Drone hydrographic photogrammetry;Water reference point;Accuracy;Image matching |
| Abstract |
Most studies using drone is confined utilization on the ground and regulation. The drone in the water is rarely used in hydrographic surveying because of the limit of flight time and image matching. This paper is the basic research for drone hydrographic photogrammetry. The accuracy of hydrographic photogrammetry, using buoys for water reference point, was evaluated. The accuracy is influenced by the accuracy of the water reference points like the photogrammetry. The position of water reference points set up on water, keep on changing due to various environmental factors such as wind speed and water velocity. The position continuously changed of the water reference points were measured 3 times using Total Station and VRS. Experiments were conducted at two reservoirs in Gimhae City, and the accuracy of the manual image matching using the water reference points is 40 cm and 80 cm. Allowable accuracy of the ocean boundary survey is ${\pm}2m$, the results of this study are fully available. The maximum position error of the water reference point for ensuring accuracy within ${\pm}2m$ is 1.8 m. |