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Unsupervised person re-identification (re-ID) has attracted increasing research interests because of its scalability and possibility for real-world applications. State-of-the-art unsupervised re-ID methods usually follow a clustering-based…

Computer Vision and Pattern Recognition · Computer Science 2022-07-08 Tianyang Liu , Yutian Lin , Bo Du

Despite remarkable advancements in text-to-image person re-identification (TIReID) facilitated by the breakthrough of cross-modal embedding models, existing methods often struggle to distinguish challenging candidate images due to intrinsic…

Machine Learning · Computer Science 2025-06-16 Yang Qin , Chao Chen , Zhihang Fu , Dezhong Peng , Xi Peng , Peng Hu

VVI-ReID is a critical technique for all-day surveillance, where temporal information provides additional cues beyond static images. However, existing approaches rely heavily on fully supervised learning with expensive cross-modality…

Computer Vision and Pattern Recognition · Computer Science 2026-04-20 Shuang Li , Jiaxu Leng , Changjiang Kuang , Mingpi Tan , Yu Yuan , Xinbo Gao

Although unsupervised person re-identification (Re-ID) has drawn increasing research attention recently, it remains challenging to learn discriminative features without annotations across disjoint camera views. In this paper, we address the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-09 Qing Li , Xiaojiang Peng , Yu Qiao , Qi Hao

Visible-infrared person re-identification (VI-ReID) aims to match persons captured by visible and infrared cameras, allowing person retrieval and tracking in 24-hour surveillance systems. Previous methods focus on learning from…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Yunhao Du , Cheng Lei , Zhicheng Zhao , Yuan Dong , Fei Su

Although unsupervised person re-identification (RE-ID) has drawn increasing research attentions due to its potential to address the scalability problem of supervised RE-ID models, it is very challenging to learn discriminative information…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Hong-Xing Yu , Wei-Shi Zheng , Ancong Wu , Xiaowei Guo , Shaogang Gong , Jian-Huang Lai

Visible-Infrared person re-identification (VI-ReID) is an important and challenging task in intelligent video surveillance. Existing methods mainly focus on learning a shared feature space to reduce the modality discrepancy between visible…

Computer Vision and Pattern Recognition · Computer Science 2023-08-30 Haichao Shi , Mandi Luo , Xiao-Yu Zhang , Ran He

Unsupervised person re-identification (Re-ID) aims to learn a feature network with cross-camera retrieval capability in unlabelled datasets. Although the pseudo-label based methods have achieved great progress in Re-ID, their performance in…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Mingxiao Zheng , Yanpeng Qu , Changjing Shang , Longzhi Yang , Qiang Shen

Visible-Infrared person re-identification (VI-ReID) in real-world scenarios poses a significant challenge due to the high cost of cross-modality data annotation. Different sensing cameras, such as RGB/IR cameras for good/poor lighting…

Computer Vision and Pattern Recognition · Computer Science 2023-10-09 Han Huang , Yan Huang , Liang Wang

Unsupervised Visible-Infrared Person Re-identification (USVI-ReID) presents a formidable challenge, which aims to match pedestrian images across visible and infrared modalities without any annotations. Recently, clustered pseudo-label…

Computer Vision and Pattern Recognition · Computer Science 2024-05-10 Xiangbo Yin , Jiangming Shi , Yachao Zhang , Yang Lu , Zhizhong Zhang , Yuan Xie , Yanyun Qu

Visible-infrared person re-identification faces greater challenges than traditional person re-identification due to the significant differences between modalities. In particular, the differences between these modalities make effective…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Yiming Wang

Person re-identification (re-ID) aims to tackle the problem of matching identities across non-overlapping cameras. Supervised approaches require identity information that may be difficult to obtain and are inherently biased towards the…

Computer Vision and Pattern Recognition · Computer Science 2024-11-08 Siddharth Seth , Akash Sonth , Anirban Chakraborty

An efficient and effective person re-identification (ReID) system relieves the users from painful and boring video watching and accelerates the process of video analysis. Recently, with the explosive demands of practical applications, a lot…

Computer Vision and Pattern Recognition · Computer Science 2020-04-28 Zheng Wang , Zhixiang Wang , Yinqiang Zheng , Yang Wu , Wenjun Zeng , Shin'ichi Satoh

Visible-Infrared Person Re-Identification (VI-ReID) is a challenging retrieval task under complex modality changes. Existing methods usually focus on extracting discriminative visual features while ignoring the reliability and commonality…

Computer Vision and Pattern Recognition · Computer Science 2022-12-02 Hu Lu , Xuezhang Zou , Pingping Zhang

Person re-identification (re-id) aims to match the same person from images taken across multiple cameras. Most existing person re-id methods generally require a large amount of identity labeled data to act as discriminative guideline for…

Computer Vision and Pattern Recognition · Computer Science 2020-09-02 Usman Ali , Bayram Bayramli , Hongtao Lu

Person re-identification (ReID) aims to retrieve target pedestrian images given either visual queries (image-to-image, I2I) or textual descriptions (text-to-image, T2I). Although both tasks share a common retrieval objective, they pose…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Linhan Zhou , Shuang Li , Neng Dong , Yonghang Tai , Yafei Zhang , Huafeng Li

Unsupervised domain adaptive person Re-IDentification (ReID) is challenging because of the large domain gap between source and target domains, as well as the lackage of labeled data on the target domain. This paper tackles this challenge…

Computer Vision and Pattern Recognition · Computer Science 2020-07-22 Jianing Li , Shiliang Zhang

Unsupervised person re-identification (ReID) aims at learning discriminative identity features without annotations. Recently, self-supervised contrastive learning has gained increasing attention for its effectiveness in unsupervised…

Computer Vision and Pattern Recognition · Computer Science 2021-08-19 Hao Chen , Benoit Lagadec , Francois Bremond

The core of video-based visible-infrared person re-identification (VVI-ReID) lies in learning sequence-level modal-invariant representations across different modalities. Recent research tends to use modality-shared language prompts…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Xiaomei Yang , Xizhan Gao , Antai Liu , Kang Wei , Fa Zhu , Guang Feng , Xiaofeng Qu , Sijie Niu

This paper proposes a novel CLIP-driven modality-shared representation learning network named CLIP4VI-ReID for VI-ReID task, which consists of Text Semantic Generation (TSG), Infrared Feature Embedding (IFE), and High-level Semantic…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Xiaomei Yang , Xizhan Gao , Sijie Niu , Fa Zhu , Guang Feng , Xiaofeng Qu , David Camacho