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Link to original content: https://doi.org/10.1007/s00530-024-01513-7
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Multi-scale feature correspondence and restriction mechanism for visible X-ray baggage re-Identification

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Abstract

Recently, social security surveillance has posed a new AI challenge, i.e., Visible-X-ray baggage Re-Identification (VX-ReID), which aims to re-identify and retrieve baggage between visible and X-ray imaging modalities. Compared with cross-modality person re-identification, VX-ReID has two distinctive bottlenecks: shape deformation and feature entanglement. For the former, the shape of the baggage can change largely, resulting in serious feature unrobustness. For the latter, the X-ray images often contain the contents of the baggage, which are not visible in daylight images. These will greatly affect the performance of representational learning loss functions (like ID Loss) in the Re-ID task. In this paper, we propose a cross-modality multi-scale feature correspondence model (CMMFC) for VX-ReID. Specifically, we devise and calculate multiple feature correspondences between modalities on multiple-scale feature maps endowed to overcome the deformation problem. We also utilize a novel feature restriction mechanism (FRM) to alleviate the feature entanglement problem, which imposes different constraints on features at different scales and accurately drives networks to distinctive modality-irrelevant features. Finally, CMMFC is extensively evaluated on our dataset RX01. Experiments show that our proposed method achieves state-of-the-art performance on dataset RX01.

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Availability of data and materials

This study did not report any data. The proposed method was evaluated on the available dataset: RX01(S. Chan, J. Cui, Y. Wu, H. Wang and C. Bai, "Visible-Xray Cross-Modality Package Re-Identification," 2023 IEEE International Conference on Multimedia and Expo (ICME), Brisbane, Australia, 2023, pp. 2579-2584, doi: 10.1109/ICME55011.2023.00439).

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Acknowledgements

This work is partially supported by the Zhejiang Provincial Natural Science Foundation of China (No. LY23F020023), Anhui key Laboratory of Bionic Sensing and AdvancedRobot Technology Project (AHFS2024KF04) and the National Natural Science Foundation of China under Grant (No. U20A20196, 61906168).

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Contributions

All authors reviewed the manuscript. Conceptualization: Sixian Chan, Jiaao Cui and Hongqiang Wang. Investigation: Sixian Chan, Jiaao Cui, Yonggan Wu,Hongqiang Wang and Cong Bai. Software and validation: Jiaao Cui, Yonggan Wu and Sixian Chan. Writing—original draft preparation: Sixian Chan, Jiaao Cui and Hongqiang Wang. Formal analysis: Sixian Chan, Jiaao Cui, Yonggan Wu, Cong Bai and Hongqiang Wang. Funding acquisition: Cong Bai and Sixian Chan. Prepared figures: Sixian Chan, Jiaao Cui and Yonggan Wu. Interpretation of data: Sixian Chan, Jiaao Cui, Yonggan Wu and Hongqiang Wang.

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Correspondence to Hongqiang Wang.

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Communicated by Bing-kun Bao.

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Chan, S., Cui, J., Wu, Y. et al. Multi-scale feature correspondence and restriction mechanism for visible X-ray baggage re-Identification. Multimedia Systems 30, 315 (2024). https://doi.org/10.1007/s00530-024-01513-7

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