Abstract：In this paper, an example of a large antique building was used to study the point cloud data collection, registration, de-noising, 3D modeling and texture mapping, respectively using the Geomagic, Auto CAD and 3DMAX methods for constructing fine three-dimensional building models. the processes and methods for fine ancient architecture modeling were mainly discussed based on point clouds by means of comparing the same parts on three models. Taking the precise total station data as reference, the accuracy and effectiveness of different methods were analyzed, It will provide a reliable theoretical and strategic support for the program selection in actual modeling.

Keyword：3D-laser scanning;antique buildings;refine modeling;texture mapping;