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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

Unsupervised Domain Adaptation (UDA) aims to classify unlabeled target domain by transferring knowledge from labeled source domain with domain shift. Most of the existing UDA methods try to mitigate the adverse impact induced by the shift…

Machine Learning · Computer Science 2022-12-13 Weikai Li , Songcan Chen

Unsupervised domain adaptation (UDA) aims to adapt existing models of the source domain to a new target domain with only unlabeled data. Most existing methods suffer from noticeable negative transfer resulting from either the error-prone…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 Qianyu Zhou , Zhengyang Feng , Qiqi Gu , Guangliang Cheng , Xuequan Lu , Jianping Shi , Lizhuang Ma

Unsupervised domain adaption (UDA) aims to adapt models learned from a well-annotated source domain to a target domain, where only unlabeled samples are given. Current UDA approaches learn domain-invariant features by aligning source and…

Computer Vision and Pattern Recognition · Computer Science 2022-02-15 Chunjiang Ge , Rui Huang , Mixue Xie , Zihang Lai , Shiji Song , Shuang Li , Gao Huang

While deep learning has significantly improved ReID model accuracy under the independent and identical distribution (IID) assumption, it has also become clear that such models degrade notably when applied to an unseen novel domain due to…

Computer Vision and Pattern Recognition · Computer Science 2023-10-25 Qilei Li , Shaogang Gong

Current gait recognition methodologies generally necessitate retraining when encountering new datasets. Nevertheless, retrained models frequently encounter difficulties in preserving knowledge from previous datasets, leading to a…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Jingjie Wang , Shunli Zhang , Xiang Wei , Senmao Tian

We present a novel unsupervised domain adaptation (DA) method for cross-domain visual recognition. Though subspace methods have found success in DA, their performance is often limited due to the assumption of approximating an entire dataset…

Computer Vision and Pattern Recognition · Computer Science 2018-11-13 Kowshik Thopalli , Rushil Anirudh , Jayaraman J. Thiagarajan , Pavan Turaga

Unsupervised Domain Adaptation (UDA) essentially trades a model's performance on a source domain for improving its performance on a target domain. To overcome this, Unsupervised Domain Expansion (UDE) has been introduced, which adapts the…

Computer Vision and Pattern Recognition · Computer Science 2025-12-29 Hailan Lin , Qijie Wei , Kaibin Tian , Ruixiang Zhao , Xirong Li

As a unique biometric feature that can be recognized at a distance, gait has broad applications in crime prevention, forensic identification and social security. To portray a gait, existing gait recognition methods utilize either a gait…

Computer Vision and Pattern Recognition · Computer Science 2018-12-13 Hanqing Chao , Yiwei He , Junping Zhang , Jianfeng Feng

Clinical gait analysis (CGA) using computer vision is an emerging field in artificial intelligence that faces barriers of accessible, real-world data, and clear task objectives. This paper lays the foundation for current developments in CGA…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Rahm Ranjan , David Ahmedt-Aristizabal , Mohammad Ali Armin , Juno Kim

In this work, we tackle the problem of unsupervised domain adaptation (UDA) for video action recognition. Our approach, which we call UNITE, uses an image teacher model to adapt a video student model to the target domain. UNITE first…

Computer Vision and Pattern Recognition · Computer Science 2025-03-06 Arun Reddy , William Paul , Corban Rivera , Ketul Shah , Celso M. de Melo , Rama Chellappa

The use of gait for person identification has important advantages such as being non-invasive, unobtrusive, not requiring cooperation and being less likely to be obscured compared to other biometrics. Existing methods for gait recognition…

Computer Vision and Pattern Recognition · Computer Science 2021-12-20 Adrian Cosma , Emilian Radoi

Unsupervised Domain Adaptation (UDA) aims to utilize labeled data from a source domain to solve tasks in an unlabeled target domain, often hindered by significant domain gaps. Traditional CNN-based methods struggle to fully capture complex…

Computer Vision and Pattern Recognition · Computer Science 2024-12-06 A. Enes Doruk , Erhan Oztop , Hasan F. Ates

Accurate recognition of human motion intention (HMI) is beneficial for exoskeleton robots to improve the wearing comfort level and achieve natural human-robot interaction. A classifier trained on labeled source subjects (domains) performs…

Signal Processing · Electrical Eng. & Systems 2025-04-29 Xiao-Yin Liu , Guotao Li , Xiao-Hu Zhou , Xu Liang , Zeng-Guang Hou

Open World Object Detection (OWOD) combines open-set object detection with incremental learning capabilities to handle the challenge of the open and dynamic visual world. Existing works assume that a foreground predictor trained on the seen…

Computer Vision and Pattern Recognition · Computer Science 2023-11-07 Xuanyi Liu , Zhongqi Yue , Xian-Sheng Hua

Gait recognition is instrumental in crime prevention and social security, for it can be conducted at a long distance to figure out the identity of persons. However, existing datasets and methods cannot satisfactorily deal with the most…

Computer Vision and Pattern Recognition · Computer Science 2024-04-23 Xuqian Ren , Saihui Hou , Chunshui Cao , Xu Liu , Yongzhen Huang

Video analysis tasks such as action recognition have received increasing research interest with growing applications in fields such as smart healthcare, thanks to the introduction of large-scale datasets and deep learning-based…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Yuecong Xu , Haozhi Cao , Zhenghua Chen , Xiaoli Li , Lihua Xie , Jianfei Yang

Unsupervised Domain Adaptation (UDA) aims to learn a predictor model for an unlabeled domain by transferring knowledge from a separate labeled source domain. However, most of these conventional UDA approaches make the strong assumption of…

Machine Learning · Computer Science 2021-04-06 Sk Miraj Ahmed , Dripta S. Raychaudhuri , Sujoy Paul , Samet Oymak , Amit K. Roy-Chowdhury

Unsupervised Domain Adaptation (UDA) is crucial to tackle the lack of annotations in a new domain. There are many multi-modal datasets, but most UDA approaches are uni-modal. In this work, we explore how to learn from multi-modality and…

Computer Vision and Pattern Recognition · Computer Science 2020-04-01 Maximilian Jaritz , Tuan-Hung Vu , Raoul de Charette , Émilie Wirbel , Patrick Pérez

Gait recognition, a rapidly advancing vision technology for person identification from a distance, has made significant strides in indoor settings. However, evidence suggests that existing methods often yield unsatisfactory results when…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Chao Fan , Saihui Hou , Junhao Liang , Chuanfu Shen , Jingzhe Ma , Dongyang Jin , Yongzhen Huang , Shiqi Yu