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Rapid Construction Algorithm of 3D Urban Road Network from Raster Maps

机译：基于栅格地图的3D城市道路网快速构建算法

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摘要

Aiming at the problems of the complex modeling, large amount and variety of data in the 3D modeling of viaducts and underpass tunnels in digital city, a novel approach is proposed for the rapid construction of 3D urban road network based on the two-dimensional raster map. Extract the centerlines of roads from the two dimensional raster map of different layers, then the rapid three-dimensional solid modeling of the viaducts and underpass tunnels could be realized through the parametric modeling and texture mapping. The experimental results show that the proposed parametric modeling approach of the urban road network could greatly reduce the modeling time, and improve the design efficiency with better flexibility and interactivity.
机译：针对数字城市高架桥和地下隧道3D建模中建模复杂，数据量大，种类繁多的问题，提出了一种基于二维栅格图快速构建3D城市道路网的新方法。 。从不同图层的二维栅格图中提取道路中心线，然后可以通过参数化建模和纹理映射来实现高架桥和地下通道的快速三维实体建模。实验结果表明，所提出的城市路网参数化建模方法可以大大减少建模时间，提高设计效率，具有更好的灵活性和交互性。

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