Research On The Key Technology Of Digital Protection In Ancient Architecture

Some of China's ancient buildings in architectural style and modern architecture is an important historical testimony of China, also represents the inheritance and development of Chinese architecture, protect such style of architecture, also is the protection of Chinese history, is our modern duty-bound mission. With laser mapping technique. The rapid development of computer technology, the 3d laser scanning imaging technology and virtual reality technology based on the rapid development. The traditional buildings by artificial means to protect main composition, etc, due to the needs of surveying and mapping of manpower and material resources and time and objectively easy in the protection of ancient caused by damage. 3d laser scanning imaging technology, accuracy, non-contact swiftness, and virtual reality technology characteristics, make each into the 3d laser scanning imaging technology and virtual reality technology used for protection of ancient become an objective demand. It also has several decades and the theoretical and practical study. Due to the particularity of the ancient buildings, using 3d laser scanning system scan the point cloud data, in certain circumstances, there will be lots of "black hole", in this case, how digital protection method. Using the virtual reality technology to protect ancient rather than the current research vice versa. On the other hand of digital protection systems rarely occur, the key technology research and specific methods also does not have uniform standard. Taking henan university auditorium, for example, using 3d laser scanning imaging system, carries on the scanning, point cloud data, through to the point cloud data processing, in virtual reality software construct accurate virtual auditorium, which used in the subsequent research on digital protection system in the auditorium development work.The main research contents of 3d laser scanning imaging system in henan university auditorium. By the actual situation, the selection of the auditorium of 8 stations and internal (8)and external (8), 3d scanning.Point cloud data pretreatment, and point cloud model. Polyworks use of point cloud data pretreatment and splicing and models, the model using the virtual software patches. Virtual space database construction method of the auditorium, auditorium, block, determine the partition of specific attributes each piece. And the preliminary roaming function of virtual auditorium and digital protection work. Digital protection function mainly used for reduction of initial construction drawings auditorium.Research mainly for:1 Point cloud data in the auditorium is under the influence of the objective reality, the point cloud data noise and "black hole" too many cases using virtual reality modeling methods and ways of the software.2 Virtual modeling software adopts point cloud data to establish the auditorium, break through the traditional virtual 3d models on image data modeling fundamental limitation of modeling, and image data set of auditorium three models,Optimized for data.3 The virtual auditorium arbitrary slice method of model. In any direction, any Angle to observe, virtual auditorium on profiles for reduction of architectural design auditorium.4 Proposed auditorium of spatial database ideas and methods. To study the management convenient auditorium, spatial data and attribute data, combined with Henan University of Modern buildings protection system for the subsequent auditorium provided theoretical basis.