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Medical Foundation Models (MFMs), trained on large-scale datasets, have demonstrated superior performance across various tasks. However, these models still struggle with domain gaps in practical applications. Specifically, even after…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Jia-Xuan Jiang , Wenhui Lei , Yifeng Wu , Hongtao Wu , Furong Li , Yining Xie , Xiaofan Zhang , Zhong Wang

Learning to reject unknown samples (not present in the source classes) in the target domain is fairly important for unsupervised domain adaptation (UDA). There exist two typical UDA scenarios, i.e., open-set, and open-partial-set, and the…

Computer Vision and Pattern Recognition · Computer Science 2021-12-17 Jian Liang , Dapeng Hu , Jiashi Feng , Ran He

Unsupervised domain adaptation (UDA) adapts a model trained on one domain (called source) to a novel domain (called target) using only unlabeled data. Due to its high annotation cost, researchers have developed many UDA methods for semantic…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Zhijie Wang , Masanori Suganuma , Takayuki Okatani

Deep learning models have exhibited remarkable efficacy in accurately delineating the prostate for diagnosis and treatment of prostate diseases, but challenges persist in achieving robust generalization across different medical centers.…

Computer Vision and Pattern Recognition · Computer Science 2024-07-08 Zihao Luo , Xiangde Luo , Zijun Gao , Guotai Wang

Unsupervised domain adaptation (UDA) assumes that source and target domain data are freely available and usually trained together to reduce the domain gap. However, considering the data privacy and the inefficiency of data transmission, it…

Computer Vision and Pattern Recognition · Computer Science 2020-12-11 Xianfeng Li , Weijie Chen , Di Xie , Shicai Yang , Peng Yuan , Shiliang Pu , Yueting Zhuang

Unsupervised domain adaptation (UDA) approaches focus on adapting models trained on a labeled source domain to an unlabeled target domain. UDA methods have a strong assumption that the source data is accessible during adaptation, which may…

Computer Vision and Pattern Recognition · Computer Science 2023-03-31 Nazmul Karim , Niluthpol Chowdhury Mithun , Abhinav Rajvanshi , Han-pang Chiu , Supun Samarasekera , Nazanin Rahnavard

In recent years, test-time adaptive object detection has attracted increasing attention due to its unique advantages in online domain adaptation, which aligns more closely with real-world application scenarios. However, existing approaches…

Computer Vision and Pattern Recognition · Computer Science 2025-10-30 Yingjie Gao , Yanan Zhang , Zhi Cai , Di Huang

Unsupervised domain adaptation (UDA) enables models trained on a labeled source domain to handle new unlabeled domains. Recently, pre-trained vision-language models (VLMs) have demonstrated promising zero-shot performance by leveraging…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Xinyao Li , Jingjing Li , Zhekai Du , Lei Zhu , Heng Tao Shen

Source-Free Domain Adaptation (SFDA) aims to adapt a pre-trained source model to a target dataset from a different domain without access to the source data. Conventional SFDA methods are limited by the information encoded in the pre-trained…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Shuhei Tarashima , Xinqi Shu , Norio Tagawa

Source-free active domain adaptation (SFADA) addresses the challenge of adapting a pre-trained model to new domains without access to source data while minimizing the need for target domain annotations. This scenario is particularly…

Computer Vision and Pattern Recognition · Computer Science 2025-01-24 Zicheng Pan , Xiaohan Yu , Weichuan Zhang , Yongsheng Gao

Domain Adaptation (DA) is crucial for robust deployment of medical image segmentation models when applied to new clinical centers with significant domain shifts. Source-Free Domain Adaptation (SFDA) is appealing as it can deal with privacy…

Computer Vision and Pattern Recognition · Computer Science 2025-06-12 Xinya Liu , Jianghao Wu , Tao Lu , Shaoting Zhang , Guotai Wang

In this paper, we address the challenging source-free unsupervised domain adaptation (SFUDA) for pinhole-to-panoramic semantic segmentation, given only a pinhole image pre-trained model (i.e., source) and unlabeled panoramic images (i.e.,…

Computer Vision and Pattern Recognition · Computer Science 2024-04-26 Xu Zheng , Pengyuan Zhou , Athanasios V. Vasilakos , Lin Wang

Few-shot unsupervised domain adaptation (FS-UDA) leverages a limited amount of labeled data from a source domain to enable accurate classification in an unlabeled target domain. Despite recent advancements, current approaches of FS-UDA…

Computer Vision and Pattern Recognition · Computer Science 2025-06-16 Wanqi Yang , Haoran Wang , Lei Wang , Ge Song , Ming Yang , Yang Gao

Open-set Domain Adaptation (OSDA) aims to adapt a model from a labeled source domain to an unlabeled target domain, where novel classes - also referred to as target-private unknown classes - are present. Source-free Open-set Domain…

Computer Vision and Pattern Recognition · Computer Science 2025-06-27 Ismail Nejjar , Hao Dong , Olga Fink

Recently, source-free unsupervised domain adaptation (SFUDA) has emerged as a more practical and feasible approach compared to unsupervised domain adaptation (UDA) which assumes that labeled source data are always accessible. However,…

Computer Vision and Pattern Recognition · Computer Science 2023-04-25 Suho Lee , Seungwon Seo , Jihyo Kim , Yejin Lee , Sangheum Hwang

Unsupervised domain adaptation (UDA) aims to learn the unlabeled target domain by transferring the knowledge of the labeled source domain. To date, most of the existing works focus on the scenario of one source domain and one target domain…

Machine Learning · Computer Science 2018-09-18 Huanhuan Yu , Menglei Hu , Songcan Chen

In the face of the deep learning model's vulnerability to domain shift, source-free domain adaptation (SFDA) methods have been proposed to adapt models to new, unseen target domains without requiring access to source domain data. Although…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Uiwon Hwang , Jonghyun Lee , Juhyeon Shin , Sungroh Yoon

Source-Free Video Unsupervised Domain Adaptation (SFVUDA) task consists in adapting an action recognition model, trained on a labelled source dataset, to an unlabelled target dataset, without accessing the actual source data. The previous…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Giacomo Zara , Alessandro Conti , Subhankar Roy , Stéphane Lathuilière , Paolo Rota , Elisa Ricci

Recent studies have used unsupervised domain adaptive object detection (UDAOD) methods to bridge the domain gap in remote sensing (RS) images. However, UDAOD methods typically assume that the source domain data can be accessed during the…

Computer Vision and Pattern Recognition · Computer Science 2024-02-01 Weixing Liu , Jun Liu , Xin Su , Han Nie , Bin Luo

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