摘要
地面三维激光扫描仪在实际工作中获取的点云精度受多种因素影响。为了有效控制影响因素,提高工作质量,分别从扫描距离、倾角、材质、颜色及环境因素方面进行分析研究。实验结果表明,各因素对点云精度有不同程度的影响,并呈现一定的规律性。当扫描距离增大时,准真值与扫描值的差值越来越大,点云数量逐渐减小;当倾角为90°时,准真值与扫描值的差值最小,点云数量最多;当材质的粗糙程度增大时,点云的反射率逐渐变小,点云数量逐渐增多。此外,温度、湿度、能见度对扫描精度的影响较小,在特定条件下可以忽略不计。
The accuracy of a 3D laser scanner point cloud data is affected by many factors. This paper assesses effect of the scanning distance, angle, material, color and environmental factors. The experimental results show that different factors have different degree of influenee on the precision of point clouds, and has certain regularity. The higher the scanning distance is, the larger the differenee between the ＂quasi true＂ and the scanning value is, and the number of point clouds gradually decreases. When the angle is 90 degrees, the differenee between the quasi true value and the scanning value is the smallest and the number of point clouds is the largest. When the roughness of the material increases, the reflectivity of the point cloud becomes smaller and the number of point clouds gradually increases. In addition, the influenee of the temperature, humidity, and visibility on scanning accuracy is small, and it can be ignored under specific conditions.
作者
刘晓文
徐工
余跃
LIU Xiaowen;XU Gong;YU Yue(School of Architectural Engineering,Shandong University of Technology,Zibo 255049,China)
出处
《山东理工大学学报（自然科学版）》
CAS
2019年第1期75-78,共4页
Journal of Shandong University of Technology:Natural Science Edition
关键词
地面三维激光扫描
影响因素
点云精度
ground three-dimensional laser scanning
influence factors
point cloud precision
作者简介
刘晓文，男，1763218064@qq．com
