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We address the problem of unsupervised domain adaptation (UDA) by learning a cross-domain agnostic embedding space, where the distance between the probability distributions of the two source and target visual domains is minimized. We use…

Machine Learning · Computer Science 2019-09-25 Alex Gabourie , Mohammad Rostami , Philip Pope , Soheil Kolouri , Kyungnam Kim

Convolutional neural networks trained on publicly available medical imaging datasets (source domain) rarely generalise to different scanners or acquisition protocols (target domain). This motivates the active field of domain adaptation.…

Image and Video Processing · Electrical Eng. & Systems 2020-10-06 Thomas Varsavsky , Mauricio Orbes-Arteaga , Carole H. Sudre , Mark S. Graham , Parashkev Nachev , M. Jorge Cardoso

Multi-source unsupervised domain adaptation~(MSDA) aims at adapting models trained on multiple labeled source domains to an unlabeled target domain. In this paper, we propose a novel multi-source domain adaptation framework based on…

Computer Vision and Pattern Recognition · Computer Science 2021-06-21 Jianzhong He , Xu Jia , Shuaijun Chen , Jianzhuang Liu

In this paper, we introduce a novel framework for the challenging problem of One-Shot Unsupervised Domain Adaptation (OSUDA), which aims to adapt to a target domain with only a single unlabeled target sample. Unlike existing approaches that…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Julio Ivan Davila Carrazco , Suvarna Kishorkumar Kadam , Pietro Morerio , Alessio Del Bue , Vittorio Murino

Unsupervised domain adaptation (UDA) is vital for alleviating the workload of labeling 3D point cloud data and mitigating the absence of labels when facing a newly defined domain. Various methods of utilizing images to enhance the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-18 Jingyi Xu , Weidong Yang , Lingdong Kong , Youquan Liu , Rui Zhang , Qingyuan Zhou , Ben Fei

This paper introduces the first fully unsupervised domain adaptation (UDA) framework for unsupervised anomaly detection (UAD). The performance of UAD techniques degrades significantly in the presence of a domain shift, difficult to avoid in…

Machine Learning · Computer Science 2025-12-29 Nesryne Mejri , Enjie Ghorbel , Anis Kacem , Pavel Chernakov , Niki Foteinopoulou , Djamila Aouada

Face Presentation Attack Detection (PAD) has drawn increasing attentions to secure the face recognition systems that are widely used in many applications. Conventional face anti-spoofing methods have been proposed, assuming that testing is…

Computer Vision and Pattern Recognition · Computer Science 2021-02-16 Yomna Safaa El-Din , Mohamed N. Moustafa , Hani Mahdi

Unsupervised domain adaptation (UDA) transfers knowledge from a label-rich source domain to a different but related fully-unlabeled target domain. To address the problem of domain shift, more and more UDA methods adopt pseudo labels of the…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Jie Wang , Xiao-Lei Zhang

Learning to estimate object pose often requires ground-truth (GT) labels, such as CAD model and absolute-scale object pose, which is expensive and laborious to obtain in the real world. To tackle this problem, we propose an unsupervised…

Computer Vision and Pattern Recognition · Computer Science 2022-04-07 Taeyeop Lee , Byeong-Uk Lee , Inkyu Shin , Jaesung Choe , Ukcheol Shin , In So Kweon , Kuk-Jin Yoon

Unsupervised Domain Adaptation (UDA) is an effective approach to tackle the issue of domain shift. Specifically, UDA methods try to align the source and target representations to improve the generalization on the target domain. Further, UDA…

Computer Vision and Pattern Recognition · Computer Science 2023-03-22 Vibashan VS , Poojan Oza , Vishal M. Patel

We present a novel approach for unsupervised domain adaptation (UDA) for natural images. A commonly-used objective for UDA schemes is to enhance domain alignment in representation space even if there is a domain shift in the input space.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Ravi Kant Gupta , Shounak Das , Amit Sethi

The recent prevalence of deep neural networks has lead semantic segmentation networks to achieve human-level performance in the medical field when sufficient training data is provided. Such networks however fail to generalize when tasked…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Serban Stan , Mohammad Rostami

Unsupervised Domain Adaptation (UDA) seeks to transfer knowledge from a labeled source domain to an unlabeled target domain but often suffers from severe domain and scale gaps that degrade performance. Existing cross-attention-based…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Zelin Zang , Yehui Yang , Fei Wang , Liangyu Li , Baigui Sun

Deep learning-based segmentation methods have been widely employed for automatic glaucoma diagnosis and prognosis. In practice, fundus images obtained by different fundus cameras vary significantly in terms of illumination and intensity.…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Qianbi Yu , Dongnan Liu , Chaoyi Zhang , Xinwen Zhang , Weidong Cai

Unsupervised domain adaptive classifcation intends to improve the classifcation performance on unlabeled target domain. To alleviate the adverse effect of domain shift, many approaches align the source and target domains in the feature…

Computer Vision and Pattern Recognition · Computer Science 2021-10-27 Guoqiang Wei , Cuiling Lan , Wenjun Zeng , Zhizheng Zhang , Zhibo Chen

In time series anomaly detection (TSAD), the scarcity of labeled data poses a challenge to the development of accurate models. Unsupervised domain adaptation (UDA) offers a solution by leveraging labeled data from a related domain to detect…

Machine Learning · Computer Science 2025-09-09 Zahra Zamanzadeh Darban , Yiyuan Yang , Geoffrey I. Webb , Charu C. Aggarwal , Qingsong Wen , Shirui Pan , Mahsa Salehi

Current state-of-the-art object detectors can have significant performance drop when deployed in the wild due to domain gaps with training data. Unsupervised Domain Adaptation (UDA) is a promising approach to adapt models for new…

Computer Vision and Pattern Recognition · Computer Science 2021-08-06 Fuxun Yu , Di Wang , Yinpeng Chen , Nikolaos Karianakis , Tong Shen , Pei Yu , Dimitrios Lymberopoulos , Sidi Lu , Weisong Shi , Xiang Chen

Unsupervised Graph Domain Adaptation (UGDA) involves the transfer of knowledge from a label-rich source graph to an unlabeled target graph under domain discrepancies. Despite the proliferation of methods designed for this emerging task, the…

Machine Learning · Computer Science 2024-11-12 Meihan Liu , Zhen Zhang , Jiachen Tang , Jiajun Bu , Bingsheng He , Sheng Zhou

Domain Adaptation (DA) is always challenged by the spurious correlation between domain-invariant features (e.g., class identity) and domain-specific features (e.g., environment) that does not generalize to the target domain. Unfortunately,…

Machine Learning · Computer Science 2023-12-05 Zhongqi Yue , Hanwang Zhang , Qianru Sun

Recent advances in unsupervised domain adaptation (UDA) show that transferable prototypical learning presents a powerful means for class conditional alignment, which encourages the closeness of cross-domain class centroids. However, the…

Computer Vision and Pattern Recognition · Computer Science 2021-01-12 Xiaofeng Liu , Xiongchang Liu , Bo Hu , Wenxuan Ji , Fangxu Xing , Jun Lu , Jane You , C. -C. Jay Kuo , Georges El Fakhri , Jonghye Woo