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Published in:
2016 | OriginalPaper | Chapter
Automatic Extraction and Construction Algorithm of Overpass from Raster Maps
Authors : Xincan Zhao, Yaodan Liu, Yaping Wang
Published in: Advances in Multimedia Information Processing - PCM 2016
Publisher: Springer International Publishing
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Abstract
Aiming at the problems of the complex modeling, large amount and variety of data in the three-dimensional (3D) modeling of overpass in digital city, a novel approach is proposed for the fast extraction and construction of 3D overpass based on the two-dimension grid map. First the centerlines of roads of the three-dimensional overpass are automatically extracted from the two dimensional grid map of local road network. Then the intersections and layers are obtained based on it. The rapid three-dimensional solid modeling of the overpass could be realized through the parametric modeling and texture mapping. The topology of the whole model is consistent with the real surface features, so it is measurable. The experimental results show that the proposed parametric modeling approach of the overpass could greatly reduce the modeling time, and improve the design efficiency with better flexibility and interactivity.