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Research on Urban Road Network Extraction Based on Web Map API Hierarchical Rasterization and Improved Thinning Algorithm

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  • Wen Wen

    (School of Traffic and Transportation, Northeast Forestry University, Harbin 150040, China
    School of Modern Service, Harbin Vocational and Technical College, Harbin 150081, China)

  • Wenhui Zhang

    (School of Traffic and Transportation, Northeast Forestry University, Harbin 150040, China)

Abstract

Most existing research on the vector road network is based on GPS trajectory travel information extraction, and urban GPS trajectory data are large and difficult to obtain. Based on this, this study proposes a road network extraction method based on network map API and designs a vector road network based on an improved image-processing algorithm using trajectory data. Firstly, a large number of trajectory data are processed by hierarchical rasterization. The trajectory points of the regional OD matrix are obtained by using the map API interface to generate the trajectory. Then, the image expansion processing is performed on the road network raster image to complete the information loss problem. The improved Zhang–Suen refinement algorithm is used to refine the idea to obtain the road center line, and the vector road network in the study area is obtained. Finally, taking the Harbin City of Heilongjiang Province as an example, compared with the road network of the network map, it has been demonstrated that using this technology may improve the traveler experience and the sustainability of urban traffic flow while reducing the number of manual procedures required, performing online incremental rapid change detection, and updating the present road network at a cheaper cost.

Suggested Citation

  • Wen Wen & Wenhui Zhang, 2022. "Research on Urban Road Network Extraction Based on Web Map API Hierarchical Rasterization and Improved Thinning Algorithm," Sustainability, MDPI, vol. 14(21), pages 1-13, November.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:21:p:14363-:d:961490
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    References listed on IDEAS

    as
    1. Ling Shen & Jian Lu & Man Long & Tingjun Chen, 2019. "Identification of Accident Blackspots on Rural Roads Using Grid Clustering and Principal Component Clustering," Mathematical Problems in Engineering, Hindawi, vol. 2019, pages 1-12, January.
    2. Alattar, Mohammad Anwar & Cottrill, Caitlin & Beecroft, Mark, 2021. "Public participation geographic information system (PPGIS) as a method for active travel data acquisition," Journal of Transport Geography, Elsevier, vol. 96(C).
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