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Automotive Engineering ›› 2023, Vol. 45 ›› Issue (11): 2082-2091.doi: 10.19562/j.chinasae.qcgc.2023.11.009

Special Issue: 智能网联汽车技术专题-感知&HMI&测评2023年

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Cross-Domain Object Detection for Intelligent Driving Based on Joint Distribution Matching of Features and Labels

Zhengfa Liu1,Ya Wu1,Peigen Liu1,Rongqi Gu2,Guang Chen1()   

  1. 1.School of Automotive Studies,Tongji University,Shanghai 201804
    2.Shanghai Westwell Technology Company Limited,Shanghai 200052
  • Received:2023-09-07 Revised:2023-10-22 Online:2023-11-25 Published:2023-11-27
  • Contact: Guang Chen E-mail:guangchen@tongji.edu.cn

Abstract:

Current cross-domain adaptive object detection methods primarily focus on reducing domain shift by learning domain-invariant features through feature distribution alignment. However, they often overlook label distribution shift issues caused by variations in object combinations and class imbalances in real-world scenarios, resulting in poor generalization performance. To address this, this paper proposes a novel domain adaptive object detection algorithm that simultaneously aligns domain distributions at both feature and label levels. Firstly, an image-level classification embedding module is introduced to enhance the transferability and discriminability of global features through contrastive learning. Next, a class-level distribution alignment module is presented to achieve inter-domain multimodal structure alignment through multi-level feature alignment. Finally, an enhanced consistency regularization module is proposed to achieve cross-domain label distribution alignment through region-based consistency regularization. Experimental results across multiple datasets demonstrate that the proposed domain alignment algorithm effectively improves semantic consistency both before and after cross-domain data adaptation. This provides a valuable solution for the effective deployment of autonomous vehicles in cross-domain scenarios.

Key words: autonomous vehicles, autonomous driving, object detection, domain adaptation