Ancient Buildings Deformation Monitor Ing Research And Application Based On 3D Laser Scanning Technology

The 3D laser scanning technology is a new developing technology in recent years, which is also called live replication technology. It’s a revolution of technology after the GPS technology in the field of Surveying and mapping. It requires no contact surface scanning artifacts, break through the traditional single point measurement.So it has unique advantages of high efficiency and high precision.As an effective means of getting spatial data, the technology has been paid more and more attention by people.Its accurate, fast, convenient operation and other advantages of application in many fields, and plays an important role in the industrial measuring system, restoration of cultural relics, large buildings such as the direction of deformation measurement.In this paper, the 3D laser scanning technology, as a new computer application technology, has many new features and functionality, the technology is introduced into the field of deformation monitoring, and to explore its application in the field of theory, is of great practical significance. In addition to explain on the current state of development and the status at home and abroad, it points out the importance of the research. This experiment using Z + F working principle of the 3 d laser scanner, the point cloud data processing in the industry. Now with the mature of 3 d laser scanning technology, it can reflect to scan the overall condition of the ancient buildings. In the aspect of deformation monitoring of single point positioning for settlement analysis, it can use the open source software Cloud Compare contrast figure according to The Times of scanning data. We monitored building object is given of drum, the deformation and subsidence displacement deformation. Based on the least squares configuration and algorithm to predict the deformation trend, convenient site late processing related to cultural relics department. This thesis shows 3 d laser scanning technology in ancient cultural relics have broad prospect of application in deformation monitoring.The main research work of this paper are:(1) This thesis studied by using Z+F 3D laser scanner to obtain a large number of the original 3D point cloud data, and the point cloud data obtained by the treatment of Geomagic, Recap, Meshlab etc. software, into suitable for the binary ply file format.(2) The Hailong Tun scanning point cloud data processing tasks within the industry before and after the operation, the multi phase scan data, analyzes the deformation processing of the different phase scanning of three-dimensional point cloud surfaces using open source software Cloud Compare, using octree fast retrieval of data compared to get the bulge, settlement, horizontal displacement value.(3) By using massive 3D point cloud data through pre acquisition field mapping,this thesis is proposed to estimate the sixth stage of deformation data by the least-square collocation method in field operation of Hailong Tun Feifengguan, the configuration problem from theory to solve the past,which is not measured parameters in adjustment not estimable covariance calculation problem, the observed value and the fitted value and actual data.The sixth stage deformation data are in good agreement, deformation monitoring curve, verify the effectiveness of the proposed method.At present, according to the deformation analysis and prediction of settlement data, this paper mainly uses the method of least square collocation. Because of not yet fully research in this area, it has a certain practical significance and broad development space.