RESEARCH OF PREPROCESSING TECHNIQUES ORIENTED TO VIRTUAL SLICE OF ORDERLY POINT CLOUD

摘要

The working principle of 3D homogeneous entity measurement method oriented to Virtual slice be elaborated, point cloud data is obtained by the method, has the characteristics of the differentiation and stratification. According to the characteristics of the kind of data, search method is used for incomplete data have been restored and abnormal data have been deleted on each piece of point cloud data, the combination of vector angle and distance threshold method what simplify rim of layer data is proposed, point cloud data is simplified by Matlab.The results showed that preprocessing techniques is simple and practical and has good flexibility and adaptability, at the same time, it has a certain guiding significance on engineering application.