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Unsupervised person re-identification (ReID) is a challenging task without data annotation to guide discriminative learning. Existing methods attempt to solve this problem by clustering extracted embeddings to generate pseudo labels.…

计算机视觉与模式识别 · 计算机科学 2022-08-30 Xue Li , Tengfei Liang , Yi Jin , Tao Wang , Yidong Li

Most existing person re-identification (re-id) methods rely on supervised model learning on per-camera-pair manually labelled pairwise training data. This leads to poor scalability in a practical re-id deployment, due to the lack of…

计算机视觉与模式识别 · 计算机科学 2019-03-05 Minxian Li , Xiatian Zhu , Shaogang Gong

Recent advances in person re-identification have demonstrated enhanced discriminability, especially with supervised learning or transfer learning. However, since the data requirements---including the degree of data curations---are becoming…

计算机视觉与模式识别 · 计算机科学 2020-11-04 Kshitij Nikhal , Benjamin S. Riggan

Unsupervised person re-identification (re-ID) aims at closing the performance gap to supervised methods. These methods build reliable relationship between data points while learning representations. However, we empirically show that the…

计算机视觉与模式识别 · 计算机科学 2021-03-22 Xuanyu He , Wei Zhang , Ran Song , Qian Zhang , Xiangyuan Lan , Lin Ma

The challenge of unsupervised person re-identification (ReID) lies in learning discriminative features without true labels. This paper formulates unsupervised person ReID as a multi-label classification task to progressively seek true…

计算机视觉与模式识别 · 计算机科学 2020-04-21 Dongkai Wang , Shiliang Zhang

Instance-level alignment is widely exploited for person re-identification, e.g. spatial alignment, latent semantic alignment and triplet alignment. This paper probes another feature alignment modality, namely cluster-level feature alignment…

计算机视觉与模式识别 · 计算机科学 2020-08-18 Qiuyu Chen , Wei Zhang , Jianping Fan

We investigate unsupervised person re-identification (Re-ID) with clothes change, a new challenging problem with more practical usability and scalability to real-world deployment. Most existing re-id methods artificially assume the clothes…

计算机视觉与模式识别 · 计算机科学 2024-01-24 Mingkun Li , Shupeng Cheng , Peng Xu , Xiatian Zhu , Chun-Guang Li , Jun Guo

Domain adaptive person re-identification (re-ID) is a challenging task, especially when person identities in target domains are unknown. Existing methods attempt to address this challenge by transferring image styles or aligning feature…

计算机视觉与模式识别 · 计算机科学 2020-04-24 Yunpeng Zhai , Shijian Lu , Qixiang Ye , Xuebo Shan , Jie Chen , Rongrong Ji , Yonghong Tian

Self-supervised instance discrimination is an effective contrastive pretext task to learn feature representations and address limited medical image annotations. The idea is to make features of transformed versions of the same images similar…

计算机视觉与模式识别 · 计算机科学 2022-11-17 Yejia Zhang , Xinrong Hu , Nishchal Sapkota , Yiyu Shi , Danny Z. Chen

Person re-identification (re-ID) is of great importance to video surveillance systems by estimating the similarity between a pair of cross-camera person shorts. Current methods for estimating such similarity require a large number of…

计算机视觉与模式识别 · 计算机科学 2022-07-28 Lin Wu , Deyin Liu , Wenying Zhang , Dapeng Chen , Zongyuan Ge , Farid Boussaid , Mohammed Bennamoun , Jialie Shen

This paper tackles the purely unsupervised person re-identification (Re-ID) problem that requires no annotations. Some previous methods adopt clustering techniques to generate pseudo labels and use the produced labels to train Re-ID models…

计算机视觉与模式识别 · 计算机科学 2021-02-08 Menglin Wang , Baisheng Lai , Jianqiang Huang , Xiaojin Gong , Xian-Sheng Hua

Unsupervised learning visible-infrared person re-identification (USL-VI-ReID) aims to learn modality-invariant features from unlabeled cross-modality datasets and reduce the inter-modality gap. However, the existing methods lack…

计算机视觉与模式识别 · 计算机科学 2024-12-30 Ruixing Wu , Yiming Yang , Jiakai He , Haifeng Hu

Feature selection methods have an important role on the readability of data and the reduction of complexity of learning algorithms. In recent years, a variety of efforts are investigated on feature selection problems based on unsupervised…

机器学习 · 计算机科学 2019-12-12 Mohsen Ghassemi Parsa , Hadi Zare , Mehdi Ghatee

Unsupervised visible-infrared person re-identification (USL-VI-ReID) aims to match pedestrian images of the same identity from different modalities without annotations. Existing works mainly focus on alleviating the modality gap by aligning…

计算机视觉与模式识别 · 计算机科学 2024-11-05 De Cheng , Lingfeng He , Nannan Wang , Shizhou Zhang , Zhen Wang , Xinbo Gao

Collaborative learning enables distributed clients to learn a shared model for prediction while keeping the training data local on each client. However, existing collaborative learning methods require fully-labeled data for training, which…

机器学习 · 计算机科学 2022-04-26 Yawen Wu , Zhepeng Wang , Dewen Zeng , Meng Li , Yiyu Shi , Jingtong Hu

Part feature learning is critical for fine-grained semantic understanding in vehicle re-identification. However, existing approaches directly model part features and global features, which can easily lead to serious gradient vanishing…

计算机视觉与模式识别 · 计算机科学 2023-03-17 Fei Shen , Xiaoyu Du , Liyan Zhang , Xiangbo Shu , Jinhui Tang

Unsupervised clustering aims at discovering the semantic categories of data according to some distance measured in the representation space. However, different categories often overlap with each other in the representation space at the…

Unsupervised video-based person re-identification (re-ID) methods extract richer features from video tracklets than image-based ones. The state-of-the-art methods utilize clustering to obtain pseudo-labels and train the models iteratively.…

计算机视觉与模式识别 · 计算机科学 2021-06-11 Pengyu Xie , Xin Xu , Zheng Wang , Toshihiko Yamasaki

This paper proposes a self-supervised learning method for the person re-identification (re-ID) problem, where existing unsupervised methods usually rely on pseudo labels, such as those from video tracklets or clustering. A potential…

计算机视觉与模式识别 · 计算机科学 2020-07-16 Zhongdao Wang , Jingwei Zhang , Liang Zheng , Yixuan Liu , Yifan Sun , Yali Li , Shengjin Wang

In this paper, we focus on the semi-supervised person re-identification (Re-ID) case, which only has the intra-camera (within-camera) labels but not inter-camera (cross-camera) labels. In real-world applications, these intra-camera labels…

计算机视觉与模式识别 · 计算机科学 2020-03-25 Lei Qi , Lei Wang , Jing Huo , Yinghuan Shi , Yang Gao