Acta Geodaetica et Cartographica Sinica ›› 2024, Vol. 53 ›› Issue (2): 367-378.doi: 10.11947/j.AGCS.2024.20220649

• Cartography and Geoinformation • Previous Articles     Next Articles

Road section navigation attribute mining

ZHANG Caili1, XIANG Longgang2, LI Yali3, GAO Songfeng1, PAN Chuanjiao1   

  1. 1. School of Surveying and Urban Spatial Information, Henan University of Urban Construction, Pingdingshan 467000, China;
    2. State Key Lab of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China;
    3. School of Transportation and Geomatics Engineering, Shenyang Jianzhu University, Shenyang 110000, China
  • Received:2022-11-15 Revised:2023-03-23 Published:2024-03-08
  • Supported by:
    The Key Research Projects of Higher Education Institutions in Henan Province (No. 24B420002); The National Natural Science Foundation of China (Nos. 41771474;42071432)

Abstract: A large number of automatic or semi-automatic road extraction methods have sprung up, but the generated products usually lacked navigation attribute information, such as road hierarchies, road speed limits, etc., which restrict intelligent navigation services such as "main road priority" and "speed limit alert". Therefore, taking road sections as the unit of analysis and considering the strong correlation between adjacent upstream and downstream road sections, a method for mining attribute information of road hierarchies and road speed limits was proposed. First, we preprocessed tracks and road networks and realized the connection between track points and road sections. Then, multi-modal features were designed based on the understanding of the data and the task. Finally, the random forest was used to recognize road hierarchies and road speed limits, taking into account the information of the target road segments and their upstream and downstream adjacency information. Compared with single-class features, the integration features of road networks and trajectories improve the classification accuracy of road hierarchies and road speed limits; compared with the classification of road hierarchies and road speed limits considering only the target road segment, the classification of road hierarchies and road speed limits considering spatial adjacency information is more effective.

Key words: crowd-sourced trajectories, navigation attribute mining, multi-mode feature fusion, spatial adjacency information, road hierarchies recognition, road speed limits recognition

CLC Number: