Implementation and visualization of weighted A-Star algorithm and bidirectional weighted A-Star algorithm under large-scale road network

Dexin Yu; Luchen Wang; Xincheng Wu; Zhuorui Wang; Jianyu Mao; Xiyang Zhou

doi:10.1117/12.2674530

23 May 2023 Implementation and visualization of weighted A-Star algorithm and bidirectional weighted A-Star algorithm under large-scale road network

Dexin Yu, Luchen Wang, Xincheng Wu, Zhuorui Wang, Jianyu Mao, Xiyang Zhou

Author Affiliations +

Proceedings Volume 12604, International Conference on Computer Graphics, Artificial Intelligence, and Data Processing (ICCAID 2022); 126040F (2023) https://doi.org/10.1117/12.2674530
Event: 2nd International Conference on Computer Graphics, Artificial Intelligence, and Data Processing (ICCAID 2022), 2022, Guangzhou, China

Abstract

In the real world, traffic scenes are complex and contain intricate road networks, which makes the shortest path computation on large-scale road networks a challenging task. Existing research has concentrated on small-scale urban road networks or grid maps. In practical scenarios, however, we are often faced with seeking the shortest paths on large-scale road networks. For this reason, it is imperative to develop efficient shortest path searching algorithms, as it offers significant savings in time and resources. To tackle this issue, this paper proposes two improved A* algorithms, namely the Weighted A* algorithm and the Bidirectional Weighted A* algorithm. To verify the effectiveness of our proposed algorithms, we validated the performance of our proposed algorithms against the conventional Dijkstra and A* algorithms on urban road networks of different sizes. Our results significantly demonstrate the effectiveness of our solution, as both algorithms significantly outperform Dijkstra's and A* algorithms, with little loss of accuracy.

Citation Download Citation

Dexin Yu, Luchen Wang, Xincheng Wu, Zhuorui Wang, Jianyu Mao, and Xiyang Zhou "Implementation and visualization of weighted A-Star algorithm and bidirectional weighted A-Star algorithm under large-scale road network", Proc. SPIE 12604, International Conference on Computer Graphics, Artificial Intelligence, and Data Processing (ICCAID 2022), 126040F (23 May 2023); https://doi.org/10.1117/12.2674530

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