Study on the Resolution of Laser Scanning Point Cloud

Resolution governs the level of identifiable details within the scanned point clouds. It can be classified into angular, range and intensity resolution. The first one is as an indicator of resolution and is the focus of this paper. The main problem concerned is the impact of angular resolution by different scan range and angle. The function of calculating point density is proposed and confirmed through practice. We use a Leica HDS3000 laser scanner to do the field test and the grassplot, cement ground, wooden wall have been taken as the test samples, and then, compared each other. The analysis shows that it is feasible to estimate the point density and evaluate the level of details that can be resolved from the scanned point clouds on forehand.