Journal of System Simulation ›› 2026, Vol. 38 ›› Issue (3): 818-828.doi: 10.16182/j.issn1004731x.joss.25-0031

• Papers • Previous Articles    

Research on Visual Place Recognition Algorithms for Complex Urban Environments

Liu Peijin1, Zhang Minxin1, He Lin2, Sun Yige1, Su Tingqi1   

  1. 1.School of Mechatronic Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
    2.School of Science, Xi'an University of Architecture and Technology, Xi'an 710055, China
  • Received:2025-01-08 Revised:2025-04-08 Online:2026-03-18 Published:2026-03-27
  • Contact: He Lin

Abstract:

Dynamic factors such as traffic flow and crowd density in complex urban environments reduce the accuracy of visual place recognition (VPR) algorithms. To solve these problems, a semantic-guided visual place recognition (SG-VPR) algorithm was proposed. A semantic-guided feature suppression module was designed. A semantic-guided module and feature suppression layer were constructed to reduce the dynamic object interference and more accurately extract the key static features. An adaptive triplet margin loss function (ATML) was proposed by improving the traditional triplet margin loss. The margins were adaptively adjusted according to the sample distribution, solving the problem of suboptimal solution convergence caused by a fixed margin strategy and improving the feature differentiation ability. Experimental results show that the SG-VPR outperforms existing methods on the Pittsburgh250k and Tokyo24/7 public datasets with complex urban environments, especially in coping with dynamic interference scenarios, which significantly improves the performance of the VPR algorithm.

Key words: complex urban environments, visual place recognition, deep learning, semantic guidance, feature suppression, adaptive triplet marginal loss(ATML)

CLC Number: