tudy and realization of construction modeling based on 3D laser scan

Abstract：In digital city construction, the method of using 3D laser scan data to model is put forward.After detailed introducing the basic principle of 3D laser scan and the methods of construction modeling, the data-processing of 3D laser scan has been emphatic studied, then the methods and process of abstracting key points of construction from 3D laser scan data have been studied too.And some noticed issues during construction modeling based on 3D laser scan have been illustrated.Finally, a construction modeling has been realized based on a group of 3D laser scan data, which will offer a good direction for application of 3D laser scan in the course of digital city construction.

Keyword：digital city;modeling;3D laser scan;