Fig. 4
From: A dataset of building surface defects collected by UAVs for machine learning-based detection

Illustration of UAV flight path and image acquisition strategy. (a) Front view shows waypoints and building facades with a hover–shoot–move approach. (b) Top view highlights horizontal FoV overlap between adjacent waypoints for seamless coverage. (c) Right view depicts vertical FoV overlap and key geometric parameters, including waypoint spacing and camera coverage. (d) Sample images captured under varying lighting conditions.