中文摘要：

顾及入射角对点云数据点位精度的影响,提出入射角定权的点云数据加权总体最小二乘平面拟合方法。该方法以加权总体最小二乘方法为基础,利用入射角信息确定点云数据中各点的平面拟合权重,并根据系数矩阵结构特点定义其权阵。通过3种不同材质平面样本数据的计算分析表明,与最小二乘法、总体最小二乘法相比,该方法可得到更高的平面拟合精度。

英文摘要：

The incidence angle has an impact on point clouds accuracyin 3d terrestrial laser scanning. For improving the accuracy, a method of weighted total least squares （WTLS） incidence angle weighting for point clouds plane fitting is proposed. In the method, the weight value of each point is determined by incidence angle, and the weight matrix is defineson the basis of the structure characteristics of coefficient matrix. The experiments with point clouds data of the plane made of three different materials show that the method is more reasonable and more accurate than least squares （LS）and total least squares （TLS）.