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Given a video or an image of a person acquired from a camera, person re-identification is the process of retrieving all instances of the same person from videos or images taken from a different camera with non-overlapping view. This task…

Computer Vision and Pattern Recognition · Computer Science 2020-02-25 Rodolfo Quispe , Helio Pedrini

Despite the promising progress made in recent years, person re-identification (re-ID) remains a challenging task due to the complex variations in human appearances from different camera views. For this challenging problem, a large variety…

Computer Vision and Pattern Recognition · Computer Science 2017-05-02 Xun Yang , Meng Wang , Richang Hong , Qi Tian , Yong Rui

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…

Computer Vision and Pattern Recognition · Computer Science 2020-04-21 Dongkai Wang , Shiliang Zhang

Person re-identification (ReId), a crucial task in surveillance, involves matching individuals across different camera views. The advent of Deep Learning, especially supervised techniques like Convolutional Neural Networks and Attention…

Computer Vision and Pattern Recognition · Computer Science 2025-10-27 Andrea Asperti , Salvatore Fiorilla , Simone Nardi , Lorenzo Orsini

Systems for person re-identification (ReID) can achieve a high accuracy when trained on large fully-labeled image datasets. However, the domain shift typically associated with diverse operational capture conditions (e.g., camera viewpoints…

Computer Vision and Pattern Recognition · Computer Science 2022-11-08 Djebril Mekhazni , Maximilien Dufau , Christian Desrosiers , Marco Pedersoli , Eric Granger

Person re-identification (Re-ID) aims to match images of the same individual across non-overlapping camera views and remains challenging due to domain shifts caused by variations in illumination, background, camera characteristics, and…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Sundas Iqbal , Qing Tian , Danish Ali , Jianping Gou , Weihua Oue

Deep learning has proven very promising for interpreting MRI in brain tumor diagnosis. However, deep learning models suffer from a scarcity of brain MRI datasets for effective training. Self-supervised learning (SSL) models provide…

Image and Video Processing · Electrical Eng. & Systems 2024-11-21 Meryem Altin Karagoz , O. Ufuk Nalbantoglu , Geoffrey C. Fox

Pretraining is a dominant paradigm in computer vision. Generally, supervised ImageNet pretraining is commonly used to initialize the backbones of person re-identification (Re-ID) models. However, recent works show a surprising result that…

Computer Vision and Pattern Recognition · Computer Science 2022-12-29 Suncheng Xiang , Jingsheng Gao , Zirui Zhang , Mengyuan Guan , Binjie Yan , Ting Liu , Dahong Qian , Yuzhuo Fu

Person re-identification (Re-ID) has achieved great improvement with deep learning and a large amount of labelled training data. However, it remains a challenging task for adapting a model trained in a source domain of labelled data to a…

Computer Vision and Pattern Recognition · Computer Science 2019-08-01 Xinyu Zhang , Jiewei Cao , Chunhua Shen , Mingyu You

Self-supervised learning (SSL) has become the de facto training paradigm of large models, where pre-training is followed by supervised fine-tuning using domain-specific data and labels. Despite demonstrating comparable performance with…

Machine Learning · Computer Science 2024-06-05 Sofia Yfantidou , Dimitris Spathis , Marios Constantinides , Athena Vakali , Daniele Quercia , Fahim Kawsar

Person Re-Identification (ReID) across non-overlapping cameras is a challenging task and, for this reason, most works in the prior art rely on supervised feature learning from a labeled dataset to match the same person in different views.…

Computer Vision and Pattern Recognition · Computer Science 2022-02-08 Gabriel Bertocco , Fernanda Andaló , Anderson Rocha

Person Re-identification (ReID) is a critical computer vision task which aims to match the same person in images or video sequences. Most current works focus on settings where the resolution of images is kept the same. However, the…

Computer Vision and Pattern Recognition · Computer Science 2021-01-19 Ziyue Zhang , Shuai Jiang , Congzhentao Huang , Richard Yi Da Xu

The primary color profile of the same identity is assumed to remain consistent in typical Person Re-identification (Person ReID) tasks. However, this assumption may be invalid in real-world situations and images hold variant color profiles,…

Computer Vision and Pattern Recognition · Computer Science 2024-05-16 Jiahao Nie , Shan Lin , Alex C. Kot

Existing person re-identification (re-id) methods are stuck when deployed to a new unseen scenario despite the success in cross-camera person matching. Recent efforts have been substantially devoted to domain adaptive person re-id where…

Computer Vision and Pattern Recognition · Computer Science 2021-09-10 Lingxiao He , Wu Liu , Jian Liang , Kecheng Zheng , Xingyu Liao , Peng Cheng , Tao Mei

Existing public person Re-Identification~(ReID) datasets are small in modern terms because of labeling difficulty. Although unlabeled surveillance video is abundant and relatively easy to obtain, it is unclear how to leverage these footage…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Weiquan Huang , Yan Bai , Qiuyu Ren , Xinbo Zhao , Ming Feng , Yin Wang

Person re-identification (ReID) aims at finding the same person in different cameras. Training such systems usually requires a large amount of cross-camera pedestrians to be annotated from surveillance videos, which is labor-consuming…

Computer Vision and Pattern Recognition · Computer Science 2019-09-25 Tianyu Zhang , Lingxi Xie , Longhui Wei , Yongfei Zhang , Bo Li , Qi Tian

In this work, we address the problem of unsupervised domain adaptation for person re-ID where annotations are available for the source domain but not for target. Previous methods typically follow a two-stage optimization pipeline, where the…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Takashi Isobe , Dong Li , Lu Tian , Weihua Chen , Yi Shan , Shengjin Wang

This paper aims to learn a domain-generalizable (DG) person re-identification (ReID) representation from large-scale videos \textbf{without any annotation}. Prior DG ReID methods employ limited labeled data for training due to the high cost…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Zhaopeng Dou , Zhongdao Wang , Yali Li , Shengjin Wang

Person re-identification (Re-ID) benefits greatly from the accurate annotations of existing datasets (e.g., CUHK03 [1] and Market-1501 [2]), which are quite expensive because each image in these datasets has to be assigned with a proper…

Computer Vision and Pattern Recognition · Computer Science 2020-07-16 Guangrun Wang , Guangcong Wang , Xujie Zhang , Jianhuang Lai , Zhengtao Yu , Liang Lin

The collection and curation of large-scale medical datasets from multiple institutions is essential for training accurate deep learning models, but privacy concerns often hinder data sharing. Federated learning (FL) is a promising solution…

Computer Vision and Pattern Recognition · Computer Science 2023-01-12 Rui Yan , Liangqiong Qu , Qingyue Wei , Shih-Cheng Huang , Liyue Shen , Daniel Rubin , Lei Xing , Yuyin Zhou