Automatic generation of large-scale 3D road networks based on GIS data. (May 2021)

• Record Type: Journal Article
• Authors: Wang, Hua; Wu, Yue; Han, Xu; Xu, Mingliang; Chen, Weizhe
• Is Part Of: Computers & graphics. Volume 96(2021)
• Page Start: 71
• Page End: 81
• Publication Date: 2021-05
• Subjects: GIS Data -- Large-scale 3D road scenes -- Automatic generation -- Traffic simulation; Computer graphics -- Periodicals; 006.6
• DOI: 10.1016/j.cag.2021.02.004
• Languages: English
• ISSNs: 0097-8493

Abstract

Highlights: The 3D scenes are created automatically with only open source Geographic Information Systems data. Diverse and complex 3D intersections are generated automatically. The 3D road surfaces are high-detailed, and they are in accordance with the code of civil engineering. The semantic structure for 3D roads network can be used in traffic simulation. Graphical abstract: Abstract: How to automatically generate a realistic large-scale 3D road network is a key point for immersive and credible traffic simulations. Existing methods cannot automatically generate various kinds of intersections in 3D space based on GIS data. In this paper, we propose a method to generate complex and large-scale 3D road networks automatically with the open source GIS data, including satellite imagery, elevation data and two-dimensional(2D) road center axis data, as input. We first introduce a semantic structure of road network to obtain high-detailed and well-formed networks in a 3D scene. We then generate 2D shapes and topological data of the road network according to the semantic structure and 2D road center axis data. At last, we segment the elevation data and generate the surface of the 3D road network according to the 2D semantic data and satellite imagery data. Results show that our method does well in the generation of various types of intersections and the high-detailed features of roads. The traffic semantic structure, which must be provided in traffic simulation, can also be generated automatically according to our method.