Title
Self-Guided Hard Negative Generation for Unsupervised Person Re-Identification.
Abstract
Recent unsupervised person re-identification (reID) methods mostly apply pseudo labels from clustering algorithms as supervision signals. Despite great success, this fashion is very likely to aggregate different identities with similar appearances into the same cluster. In result, the hard negative samples, playing important role in training reID models, are significantly reduced. To alleviate this problem, we propose a self-guided hard negative generation method for unsupervised person re-ID. Specifically, a joint framework is developed which incorporates a hard negative generation network (HNGN) and a re-ID network. To continuously generate harder negative samples to provide effective supervisions in the contrastive learning, the two networks are alternately trained in an adversarial manner to improve each other, where the reID network guides HNGN to generate challenging data and HNGN enforces the re-ID network to enhance discrimination ability. During inference, the performance of re-ID network is improved without introducing any extra parameters. Extensive experiments demonstrate that the proposed method significantly outperforms a strong baseline and also achieves better results than state-of-the-art methods.
Year
DOI
Venue
2022
10.24963/ijcai.2022/149
European Conference on Artificial Intelligence
Keywords
DocType
Citations 
Computer Vision: Image and Video retrieval
Conference
0
PageRank 
References 
Authors
0.34
0
7
Name
Order
Citations
PageRank
Dongdong Li101.35
Zhigang Wang200.34
Z. J. Wang389789.61
Xinyu Zhang400.34
Er-rui Ding514229.31
Jingdong Wang600.34
Zhaoxiang Zhang7102299.76