Abstract: Traditional model for assessing the single point cloud data’s quality is incomprehensive because only distance values, angle values and instrument’s measuring accuracy are taken into consideration. But the appearance of irregular object will affect the incident beam’s reflected path and strength, and thus affect the quality of the point cloud data. According to the appearance’s effect on the point cloud data’s quality, we propose a point accuracy assessment model in consideration of incident angle to quantitatively assess the point cloud data’s quality, and verify the model’s feasibility through experiment.

Key words: 3D laser scanning, point cloud data, incident angle, point accuracy, assessment model