The Influence of Camera Calibration on Nearshore Bathymetry Estimation from UAV Videos

Measuring the nearshore bathymetry is critical in coastal management and morphodynamic studies. The recent advent of Unmanned Aerial Vehicles (UAVs), combination with video monitoring techniques, allows for an alternative low cost evaluation bathymetry. Camera calibration stabilization a issue estimation from systems. This work introduces new methodology order to obtain such bathymetries, it compares results echo-sounder ground truth data. goal gain better understanding on influence camera inferred show how proposed accurate evaluations bathymetry, overall root mean square errors 40 cm. It shown that intrinsic camera, related lens distortion, most aspect. Here, was obtained directly during flight yields best results.