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This paper considers a realistic problem in person re-identification (re-ID) task, i.e., partial re-ID. Under partial re-ID scenario, the images may contain a partial observation of a pedestrian. If we directly compare a partial pedestrian…

Computer Vision and Pattern Recognition · Computer Science 2019-04-02 Yifan Sun , Qin Xu , Yali Li , Chi Zhang , Yikang Li , Shengjin Wang , Jian Sun

Most video person re-identification (re-ID) methods are mainly based on supervised learning, which requires cross-camera ID labeling. Since the cost of labeling increases dramatically as the number of cameras increases, it is difficult to…

Computer Vision and Pattern Recognition · Computer Science 2020-05-14 Youngeun Kim , Seokeon Choi , Taekyung Kim , Sumin Lee , Changick Kim

Lifelong person re-identification (LReID) aims to learn from varying domains to obtain a unified person retrieval model. Existing LReID approaches typically focus on learning from scratch or a visual classification-pretrained model, while…

Computer Vision and Pattern Recognition · Computer Science 2026-03-23 Kunlun Xu , Haotong Cheng , Jiangmeng Li , Xu Zou , Jiahuan Zhou

Video-based person re-identification (re-ID) refers to matching people across camera views from arbitrary unaligned video footages. Existing methods rely on supervision signals to optimise a projected space under which the distances between…

Computer Vision and Pattern Recognition · Computer Science 2019-09-13 Lin Wu , Yang Wang , Hongzhi Yin , Meng Wang , Ling Shao

Person re-identification (ReID) is a well-known problem in the field of computer vision. The primary objective is to identify a specific individual within a gallery of images. However, this task is challenging due to various factors, such…

Computer Vision and Pattern Recognition · Computer Science 2023-09-28 Vipin Gautam , Shitala Prasad , Sharad Sinha

The scalability problem caused by the difficulty in annotating Person Re-identification(Re-ID) datasets has become a crucial bottleneck in the development of Re-ID.To address this problem, many unsupervised Re-ID methods have recently been…

Computer Vision and Pattern Recognition · Computer Science 2019-11-01 Zhirui Chen , Jianheng Li , Wei-Shi Zheng

Aerial-Ground Person Re-Identification (AGPReID) remains highly challenging due to drastic viewpoint variations between drones and fixed cameras. Existing methods typically follow a view-invariant paradigm, aligning shared features across…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Quan Zhang , Zeqiang Cai , Peiming Zhao , Jingze Wu , Cailun Wu , Hongbo Chen , Jianhuang Lai

Despite recent attempts for solving the person re-identification problem, it remains a challenging task since a person's appearance can vary significantly when large variations in view angle, human pose, and illumination are involved. In…

Computer Vision and Pattern Recognition · Computer Science 2019-04-30 Alireza Rahimpour , Liu Liu , Ali Taalimi , Yang Song , Hairong Qi

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…

Computer Vision and Pattern Recognition · Computer Science 2021-02-08 Menglin Wang , Baisheng Lai , Jianqiang Huang , Xiaojin Gong , Xian-Sheng Hua

We empirically investigate the camera bias of person re-identification (ReID) models. Previously, camera-aware methods have been proposed to address this issue, but they are largely confined to training domains of the models. We measure the…

Computer Vision and Pattern Recognition · Computer Science 2025-02-17 Myungseo Song , Jin-Woo Park , Jong-Seok Lee

Person re-identification aims to identify a specific person at distinct times and locations. It is challenging because of occlusion, illumination, and viewpoint change in camera views. Recently, multi-shot person re-id task receives more…

Computer Vision and Pattern Recognition · Computer Science 2018-11-09 Ting-Yao Hu , Xiaojun Chang , Alexander G. Hauptmann

Image-to-point cloud cross-modal Visual Place Recognition (VPR) is a challenging task where the query is an RGB image, and the database samples are LiDAR point clouds. Compared to single-modal VPR, this approach benefits from the widespread…

Computer Vision and Pattern Recognition · Computer Science 2025-03-03 Jianyi Peng , Fan Lu , Bin Li , Yuan Huang , Sanqing Qu , Guang Chen

In recent years, attention models have been extensively used for person and vehicle re-identification. Most re-identification methods are designed to focus attention on key-point locations. However, depending on the orientation, the…

Computer Vision and Pattern Recognition · Computer Science 2019-09-25 Pirazh Khorramshahi , Amit Kumar , Neehar Peri , Sai Saketh Rambhatla , Jun-Cheng Chen , Rama Chellappa

Unsupervised domain adaptation in person re-identification resorts to labeled source data to promote the model training on target domain, facing the dilemmas caused by large domain shift and large camera variations. The non-overlapping…

Computer Vision and Pattern Recognition · Computer Science 2019-05-15 Chuan-Xian Ren , Bo-Hua Liang , Zhen Lei

Aerial-Ground Person Re-IDentification (AG-ReID) aims to retrieve specific persons across cameras with different viewpoints. Previous works focus on designing discriminative models to maintain the identity consistency despite drastic…

Computer Vision and Pattern Recognition · Computer Science 2026-05-15 Yuhao Wang , Xiang Hu , Lixin Wang , Pingping Zhang , Huchuan Lu

Person Re-ID has been gaining a lot of attention and nowadays is of fundamental importance in many camera surveillance applications. The task consists of identifying individuals across multiple cameras that have no overlapping views. Most…

Computer Vision and Pattern Recognition · Computer Science 2023-04-28 Lucas Pascotti Valem , Daniel Carlos Guimarães Pedronette

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 is the challenging task of identifying a person across different camera views. Training a convolutional neural network (CNN) for this task requires annotating a large dataset, and hence, it involves the…

Computer Vision and Pattern Recognition · Computer Science 2021-07-27 Olga Moskvyak , Frederic Maire , Feras Dayoub , Mahsa Baktashmotlagh

Aiming at recognizing images of the same person across distinct camera views, person re-identification (re-ID) has been among active research topics in computer vision. Most existing re-ID works require collection of a large amount of…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Ci-Siang Lin , Yuan-Chia Cheng , Yu-Chiang Frank Wang

Unsupervised Domain Adaptation (UDA) methods for person Re-Identification (Re-ID) rely on target domain samples to model the marginal distribution of the data. To deal with the lack of target domain labels, UDA methods leverage information…

Computer Vision and Pattern Recognition · Computer Science 2021-01-06 Tiago de C. G. Pereira , Teofilo E. de Campos