Integrated model construction and simplification methods for Web 3D road
PU Hao1,2,LI Wei1,2,ZHAO Haifeng1,2
1. National Engineering Laboratory for High Speed Railway Construction, Changsha Hunan 410075, China 2. School of Civil Engineering, Central South University, Changsha Hunan 410075, China
Abstract：In order to realize the Web 3D visualization of road engineering, the key technologies such as the road integrated 3D model construction and simplification methods concerning constraints were studied. Based on the theory of constrained Delaunay triangulation, the road 3D model with integrated appearance and inner topological relationship was created. A half-edge collapse error metric concerning road constrained edges was proposed. Based on it, original road model was integrated and simplified by half-edge collapse and operating hierarchical tree was built to store operation records on the server. The view-dependent strategy was put forward, in which the constrained edges were refined preferentially and simplified afterwards. Combined with the view-dependent reconstruction criterions, the transmission data for 3D visualization was substantially reduced and fast view-dependent reconstruction of the road 3D model was realized on the client. Given the benefits from above methods, a relevant system was developed out and applied to many highways Web-based construction management successfully.
蒲浩 李伟 赵海峰. 网络环境下道路三维整体建模与简化方法[J]. 计算机应用, 2013, 33(02): 525-529.
PU Hao LI Wei ZHAO Haifeng. Integrated model construction and simplification methods for Web 3D road. Journal of Computer Applications, 2013, 33(02): 525-529.
2013, Vol. 33 
