Acta Geodaetica et Cartographica Sinica ›› 2018, Vol. 47 ›› Issue (2): 281-290.doi: 10.11947/j.AGCS.2018.20170490

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Surface Reconstruction Algorithm Based on 3D Delaunay Triangulation

JIA Junhui1,2, HUANG Ming1,2,3, LIU Xianglei1   

  1. 1. School of Geomatics and Urban Spatial Information, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
    2. Beijing Key Laboratory for Architectural Heritage Fine Reconstruction & Health Monitoring, Beijing 100044, China;
    3. Engineering Research Center of Representative Building and Architectural Heritage Database, Ministry of Education, Beijing 100044, China
  • Received:2017-08-31 Revised:2017-12-05 Online:2018-02-20 Published:2018-03-02
  • Supported by:
    The General Project of Science and Technology Program of Beijing Municipal Commission of Education (2016 sub project No. 49);The National Natural Science Foundation of China (Nos. 41601409;41501494);Natural Science Foundation of Beijing (No. 8172016);2017 Annual Innovation Base Breeding and Development of Beijing Municipal Science and Technology Commission (No. Z171100002217075)

Abstract: With the development of 3D laser scanning technology,the demand for 3D modeling of point cloud data is increasing.As one of the core technologies of 3D modeling,surface reconstruction technology has an extremely widespread application prospect in reverse engineering,computer vision,computer graphics and virtual reality technology.This paper presents a surface reconstruction algorithm based on three-dimensional Delaunay triangulation,it is essentially a greedy algorithm,and combined with the idea of surface region growing algorithm.Manifold surface composed of a selection of explicit triangles can be reconstructed by this algorithm under a certain topological limit,the best triangles are selected from the preconstructed 3D Delaunay triangulation according to the appropriate triangle selection criteria by this algorithm,and added to the growing surface one by one.Compared with the current mainstream implicit surface reconstruction algorithm,this method has the advantages of less parameter dependency and no need to calculate normal line,and it can reconstruct the point cloud model of terrain scanning,building scanning and fine scanning.Using this algorithm to reconstruct the surface of a variety of point cloud models,experimental results show that the quality of the surface generated by the algorithm is choiceness,and the efficiency of reconstruction is faster,this surface reconstruction algorithm has stronger practicability and can be better applied in the field of 3D modeling.

Key words: 3D modeling, 3D Delaunay triangulation, greedy algorithm, surface reconstruction

CLC Number: