Application of point cloud image in surveying and mapping of facade of the protected historic buildings
Aiming at the problems of incomplete data collection,low accuracy,low automation and efficiency of traditional methods in surveying and mapping of the facade of irregular and complex protected historic buildings,this paper uses 3D laser scanning technology to conduct fine collection of point cloud data of the facade of protected historic buildings,and proposes a new method based on point cloud gray image and depth image.Taking the facade mapping of an excellent historical building in Shanghai City as an example,the key technologies in the process of 3D laser scanning point cloud data processing are elaborated,and the feasibility of the proposed method is verified,so as to provide data basis and technical reference for the digital archiving and planning protection of historical buildings.
building facade3 D laser scanninggray imagedepth imagefacade mapping
NETL
NSTL
万方数据
维普
