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Semi-supervised learning methods are motivated by the availability of large datasets with unlabeled features in addition to labeled data. Unlabeled data is, however, not guaranteed to improve classification performance and has in fact been…

Machine Learning · Statistics 2019-10-25 Xiuming Liu , Dave Zachariah , Johan Wågberg , Thomas B. Schön

Most existing person re-identification (ReID) methods rely only on the spatial appearance information from either one or multiple person images, whilst ignore the space-time cues readily available in video or image-sequence data. Moreover,…

Computer Vision and Pattern Recognition · Computer Science 2016-11-29 Xiaolong Ma , Xiatian Zhu , Shaogang Gong , Xudong Xie , Jianming Hu , Kin-Man Lam , Yisheng Zhong

Deep learning methods have started to dominate the research progress of video-based person re-identification (re-id). However, existing methods mostly consider supervised learning, which requires exhaustive manual efforts for labelling…

Computer Vision and Pattern Recognition · Computer Science 2018-08-23 Yanbei Chen , Xiatian Zhu , Shaogang Gong

Unsupervised person re-identification (re-ID) aims at learning discriminative representations for person retrieval from unlabeled data. Recent techniques accomplish this task by using pseudo-labels, but these labels are inherently noisy and…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Yoonki Cho , Woo Jae Kim , Seunghoon Hong , Sung-Eui Yoon

Recently, large-scale vision-language pre-trained models like CLIP have shown impressive performance in image re-identification (ReID). In this work, we explore whether self-supervision can aid in the use of CLIP for image ReID tasks.…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Bin Wang , Yuying Liang , Lei Cai , Huakun Huang , Huanqiang Zeng

Images with different resolutions are ubiquitous in public person re-identification (ReID) datasets and real-world scenes, it is thus crucial for a person ReID model to handle the image resolution variations for improving its generalization…

Computer Vision and Pattern Recognition · Computer Science 2018-10-25 Zijie Zhuang , Haizhou Ai , Long Chen , Chong Shang

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.…

Computer Vision and Pattern Recognition · Computer Science 2022-08-30 Xue Li , Tengfei Liang , Yi Jin , Tao Wang , Yidong Li

Recently, vehicle similarity learning, also called re-identification (ReID), has attracted significant attention in computer vision. Several algorithms have been developed and obtained considerable success. However, most existing methods…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Wei-Ting Chen , I-Hsiang Chen , Chih-Yuan Yeh , Hao-Hsiang Yang , Hua-En Chang , Jian-Jiun Ding , Sy-Yen Kuo

Modern person re-identification (Re-ID) methods have a weak generalization ability and experience a major accuracy drop when capturing environments change. This is because existing multi-camera Re-ID datasets are limited in size and…

Computer Vision and Pattern Recognition · Computer Science 2024-10-30 Timur Mamedov , Anton Konushin , Vadim Konushin

Person re-identification (ReID) is an important problem in computer vision, especially for video surveillance applications. The problem focuses on identifying people across different cameras or across different frames of the same camera.…

Computer Vision and Pattern Recognition · Computer Science 2018-12-27 Doney Alex , Zishan Sami , Sumandeep Banerjee , Subrat Panda

Cross-modal data matching refers to retrieval of data from one modality, when given a query from another modality. In general, supervised algorithms achieve better retrieval performance compared to their unsupervised counterpart, as they…

Computer Vision and Pattern Recognition · Computer Science 2019-05-28 Devraj Mandal , Pramod Rao , Soma Biswas

Human intelligence can retrieve any person according to both visual and language descriptions. However, the current computer vision community studies specific person re-identification (ReID) tasks in different scenarios separately, which…

Computer Vision and Pattern Recognition · Computer Science 2025-04-30 Weizhen He , Yiheng Deng , Yunfeng Yan , Feng Zhu , Yizhou Wang , Lei Bai , Qingsong Xie , Donglian Qi , Wanli Ouyang , Shixiang Tang

Current lifelong person re-identification (LReID) methods predominantly rely on fully labeled data streams. However, in real-world scenarios where annotation resources are limited, a vast amount of unlabeled data coexists with scarce…

Computer Vision and Pattern Recognition · Computer Science 2025-07-25 Kunlun Xu , Fan Zhuo , Jiangmeng Li , Xu Zou , Jiahuan Zhou

Most existing person re-identification algorithms either extract robust visual features or learn discriminative metrics for person images. However, the underlying manifold which those images reside on is rarely investigated. That raises a…

Computer Vision and Pattern Recognition · Computer Science 2017-03-27 Song Bai , Xiang Bai , Qi Tian

Person re-identification (Re-ID) aims to match person images across different camera views, with occluded Re-ID addressing scenarios where pedestrians are partially visible. While pre-trained vision-language models have shown effectiveness…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Rui Zhi , Zhen Yang , Haiyang Zhang

Cloth-changing person re-identification is a subject closer to the real world, which focuses on solving the problem of person re-identification after pedestrians change clothes. The primary challenge in this field is to overcome the complex…

Computer Vision and Pattern Recognition · Computer Science 2025-01-16 Shengxun Wei , Zan Gao , Chunjie Ma , Yibo Zhao , Weili Guan , Shengyong Chen

This paper presents an approach to tackle the re-identification problem. This is a challenging problem due to the large variation of pose, illumination or camera view. More and more datasets are available to train machine learning models…

Computer Vision and Pattern Recognition · Computer Science 2018-07-26 Matthieu Ospici , Antoine Cecchi

The problem of image-base person identification/recognition is to provide an identity to the image of an individual based on learned models that describe his/her appearance. Most traditional person identification systems rely on learning a…

Computer Vision and Pattern Recognition · Computer Science 2016-07-05 Abir Das , Rameswar Panda , Amit K. Roy-Chowdhury

Person re-identification (ReID) is a challenging task due to arbitrary human pose variations, background clutters, etc. It has been studied extensively in recent years, but the multifarious local and global features are still not fully…

Computer Vision and Pattern Recognition · Computer Science 2018-10-16 Fan Yang , Ke Yan , Shijian Lu , Huizhu Jia , Xiaodong Xie , Wen Gao

Most state-of-the-art person re-identification (re-id) methods depend on supervised model learning with a large set of cross-view identity labelled training data. Even worse, such trained models are limited to only the same-domain…

Computer Vision and Pattern Recognition · Computer Science 2019-07-24 Xu Lan , Xiatian Zhu , Shaogang Gong