DF^2AM: Dual-level Feature Fusion and Affinity Modeling for RGB-Infrared Cross-modality Person Re-identification

• URL: http://arxiv.org/abs/2104.00226v1
• Date: Thu, 1 Apr 2021 03:12:56 GMT
• Title: DF^2AM: Dual-level Feature Fusion and Affinity Modeling for RGB-Infrared Cross-modality Person Re-identification
• Authors: Junhui Yin, Zhanyu Ma, Jiyang Xie, Shibo Nie, Kongming Liang, and Jun Guo
• Abstract summary: RGB-infrared person re-identification is a challenging task due to the intra-class variations and cross-modality discrepancy. We propose a Dual-level (i.e., local and global) Feature Fusion (DF2) module by learning attention for discnative feature from local to global manner. To further mining the relationships between global features from person images, we propose an Affinities Modeling (AM) module.
• Score: 18.152310122348393
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: RGB-infrared person re-identification is a challenging task due to the intra-class variations and cross-modality discrepancy. Existing works mainly focus on learning modality-shared global representations by aligning image styles or feature distributions across modalities, while local feature from body part and relationships between person images are largely neglected. In this paper, we propose a Dual-level (i.e., local and global) Feature Fusion (DF^2) module by learning attention for discriminative feature from local to global manner. In particular, the attention for a local feature is determined locally, i.e., applying a learned transformation function on itself. Meanwhile, to further mining the relationships between global features from person images, we propose an Affinities Modeling (AM) module to obtain the optimal intra- and inter-modality image matching. Specifically, AM employes intra-class compactness and inter-class separability in the sample similarities as supervised information to model the affinities between intra- and inter-modality samples. Experimental results show that our proposed method outperforms state-of-the-arts by large margins on two widely used cross-modality re-ID datasets SYSU-MM01 and RegDB, respectively.

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