Research Of Ancient Building Surveyingand Mapping Based On Point Cloud Data Of Processing Technology

The defects of traditional way of surveying and mapping that work complicated 、 structure complex, personnel safety and accuracy of measurement of surveying and mapping, eventually lead to form inaccurate and not normative figure of surveying and mapping and bring trouble to study. The appearance of 3 D laser scanner completely changed the way of the existing data collection. Research on ancient building of surveying and mapping areas make up for the deficiencies of the traditional manual mapping method. Due to the 3 D laser scanner of rapidity, non-contact, high accuracy which widely used in the field of ancient building surveying and mapping in the promoted the protection of cultural relics itself, it have important research value and significance in ancient architecture protection, restoration and reconstruction, etc.This paper main research work:(1)After using of 3 d laser scanner to get point cloud data, the point cloud data is registration, splicing and denoising of processing; Then detailed of point cloud data noise are classified and the adaptive fuzzy C-average clustering method research, getting rid of noise effectively.(2) Traditional curve fitting using the approximation method and interpolation method have some defects, the least square method and B-spine interpolation method is effective to form an improved B-spine curve interpolation method, get rid of noise effectively., increase the smoothness of the fitted curve, and improve the precision of curve fitting.(3) On the basis of analyzing and comparing two kinds of improved ICP algorithm that is introduced into the registration case, I research ancient building surveying and mapping experiment, dividing point cloud data, using the Autodesk Recap software tools of virtual model measuring the two-dimensional structure of ancient info graphics, relative to the traditional manual drawing structure effect is more intuitive.