Trajectory vector field calculation and visualization method for regional congestion evaluation

Taizeng Li; Jianqin Zhang; Zhixin Yao; Zhuohang Li

doi:10.1117/12.2684015

14 June 2023 Trajectory vector field calculation and visualization method for regional congestion evaluation

Taizeng Li, Jianqin Zhang, Zhixin Yao, Zhuohang Li

Proceedings Volume 12708, 3rd International Conference on Internet of Things and Smart City (IoTSC 2023）; 1270802 (2023) https://doi.org/10.1117/12.2684015
Event: 3rd International Conference on Internet of Things and Smart City (IoTSC 2023）, 2023, Chongqing, China

Abstract

Congestion status evaluation is a vital link and tool in urban traffic congestion management. To timely warn and evaluate the congestion status of urban hot spots, a new congestion situation visualization model based on vector field is proposed. The calculation method of congestion status evaluation index is simplified based on this method. At the model building level, combining the advantages of OD flow diagram and OD matrix diagram, a dynamic visualization model of traffic congestion situation monitoring is established by constructing grid division and extracting action quantities. A method for identifying the trend of traffic congestion characteristics in urban areas is proposed. Simplify the algorithm level, combine the model visualization and the calculation process of the congestion evaluation index, and calculate the average actual travel time according to the vector field data structure, to realize the rapid calculation of the congestion index. The research shows that the model has the ability of trend analysis based on the visual expression of many basic traffic flow parameters such as flow, flow direction, speed, and spatial distribution, and realizes effective identification and early warning of hotspot congestion areas. The simplified calculation results of congestion index Compared with the traditional traffic index algorithm, the average error is 0.016. While the calculation efficiency is optimized, the effectiveness of the regional congestion index is guaranteed. This method can apply the research results to urban traffic congestion monitoring and management.

Citation Download Citation

Taizeng Li, Jianqin Zhang, Zhixin Yao, and Zhuohang Li "Trajectory vector field calculation and visualization method for regional congestion evaluation", Proc. SPIE 12708, 3rd International Conference on Internet of Things and Smart City (IoTSC 2023）, 1270802 (14 June 2023); https://doi.org/10.1117/12.2684015

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KEYWORDS

Visualization

Global Positioning System

Roads

Data modeling

Power grids

Visual process modeling

Analytical research

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