PRECISE MEASUREMENT AND 3-D SURFACERECONSTRUCTION OF DEFORMATION STRUCTURE OF BRIDGE
Liao Zhongping 1) ；Shen Yunzhong 2) ；Zhou Zebo 2) and Cai Shiyi 2)
1)School of Communication and Transportation Engineering, Changsha University of\= Science and Technology, Changsha 4100042)Department of Surveying and Geo-Informatics, Tongji University, Shanghai 200092
Abstract：According to limited discrete datum points, a surface fitting method based on Matlab 6.5 for the deformation body is put forward. The steps of this method are, first, applying Delaunay triangulation on the irregular data, then, finding the nearest triangle of every interpolation points (
Xi,Yi) and interpolating this surface at the points to produce Zi based on the theory and method of trianglebased cubic interpolation. The results indicate that with this method the 3D surface of the deformation body can be reconstructed, and the fitting surface is smooth.
Liao Zhongping ,Shen Yunzhong ,Zhou Zebo and Cai Shiyi et al. PRECISE MEASUREMENT AND 3-D SURFACERECONSTRUCTION OF DEFORMATION STRUCTURE OF BRIDGE[J]. jgg, 2009, 29(4): 148-151.
