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In this paper, we aim to adapt a model at test-time using a few unlabeled data to address distribution shifts. To tackle the challenges of extracting domain knowledge from a limited amount of data, it is crucial to utilize correlated…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Zhixiang Chi , Li Gu , Tao Zhong , Huan Liu , Yuanhao Yu , Konstantinos N Plataniotis , Yang Wang

Medical vision foundation models remain limited in downstream tasks, particularly volumetric medical image segmentation. While fine-tuning on labeled target-domain data improves performance, existing approaches typically rely on randomly…

Image and Video Processing · Electrical Eng. & Systems 2026-05-07 Jin Yang , Daniel S. Marcus , Aristeidis Sotiras

Source-free domain adaptation (SFDA) tackles the critical challenge of adapting source-pretrained models to unlabeled target domains without access to source data, overcoming data privacy and storage limitations in real-world applications.…

Computer Vision and Pattern Recognition · Computer Science 2026-01-14 Xi Chen , Hongxun Yao , Sicheng Zhao , Jiankun Zhu , Jing Jiang , Kui Jiang

Unsupervised domain adaptation (UDA) for semantic segmentation aims to adapt a segmentation model trained on the labeled source domain to the unlabeled target domain. Existing methods try to learn domain invariant features while suffering…

Computer Vision and Pattern Recognition · Computer Science 2021-07-28 Li Gao , Jing Zhang , Lefei Zhang , Dacheng Tao

Domain adaptive object detection aims to leverage the knowledge learned from a labeled source domain to improve the performance on an unlabeled target domain. Prior works typically require the access to the source domain data for…

Computer Vision and Pattern Recognition · Computer Science 2023-06-08 Han Sun , Rui Gong , Konrad Schindler , Luc Van Gool

Unsupervised domain adaptation (UDA) aims to transfer knowledge learned from a labeled source domain to an unlabeled and unseen target domain, which is usually trained on data from both domains. Access to the source domain data at the…

Computer Vision and Pattern Recognition · Computer Science 2021-06-24 Xiaofeng Liu , Fangxu Xing , Chao Yang , Georges El Fakhri , Jonghye Woo

Source-free Unsupervised Domain Adaptation (SF-UDA) aims to adapt a well-trained source model to an unlabeled target domain without access to the source data. One key challenge is the lack of source data during domain adaptation. To handle…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Hongbin Lin , Mingkui Tan , Yifan Zhang , Zhen Qiu , Shuaicheng Niu , Dong Liu , Qing Du , Yanxia Liu

In this work, we introduce a new concept, named source-free open compound domain adaptation (SF-OCDA), and study it in semantic segmentation. SF-OCDA is more challenging than the traditional domain adaptation but it is more practical. It…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Yuyang Zhao , Zhun Zhong , Zhiming Luo , Gim Hee Lee , Nicu Sebe

Annotation-efficient segmentation of the numerous mitochondria instances from various electron microscopy (EM) images is highly valuable for biological and neuroscience research. Although unsupervised domain adaptation (UDA) methods can…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Shan Xiong , Jiabao Chen , Ye Wang , Jialin Peng

This paper presents a simple yet effective two-stage framework for semi-supervised medical image segmentation. Unlike prior state-of-the-art semi-supervised segmentation methods that predominantly rely on pseudo supervision directly on…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Huimin Wu , Xiaomeng Li , Kwang-Ting Cheng

Given the rapidly changing machine learning environments and expensive data labeling, semi-supervised domain adaptation (SSDA) is imperative when the labeled data from the source domain is statistically different from the partially labeled…

Machine Learning · Computer Science 2022-07-27 Madhureeta Das , Xianhao Chen , Xiaoyong Yuan , Lan Zhang

Deep learning models in computational pathology often fail to generalize across cohorts and institutions due to domain shift. Existing approaches either fail to leverage unlabeled data from the target domain or rely on image-to-image…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Tengyue Zhang , Ruiwen Ding , Luoting Zhuang , Yuxiao Wu , Erika F. Rodriguez , William Hsu

Decoupling domain-variant information (DVI) from domain-invariant information (DII) serves as a prominent strategy for mitigating domain shifts in the practical implementation of deep learning algorithms. However, in medical settings,…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Haojin Li , Heng Li , Jianyu Chen , Rihan Zhong , Ke Niu , Huazhu Fu , Jiang Liu

Unsupervised domain adaptation (UDA) has become increasingly prevalent in scene text recognition (STR), especially where training and testing data reside in different domains. The efficacy of existing UDA approaches tends to degrade when…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Kha Nhat Le , Hoang-Tuan Nguyen , Hung Tien Tran , Thanh Duc Ngo

Growing demands for clinical data privacy and storage constraints have spurred advances in Source Free Unsupervised Domain Adaptation (SFUDA). SFUDA addresses the domain shift by adapting models from the source domain to the unseen target…

Computer Vision and Pattern Recognition · Computer Science 2026-02-02 Yulong Shi , Jiapeng Li , Lin Qi

One of the primary challenges in Semi-supervised Domain Adaptation (SSDA) is the skewed ratio between the number of labeled source and target samples, causing the model to be biased towards the source domain. Recent works in SSDA show that…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Abhay Rawat , Isha Dua , Saurav Gupta , Rahul Tallamraju

Domain adaptation typically requires to access source domain data to utilize their distribution information for domain alignment with the target data. However, in many real-world scenarios, the source data may not be accessible during the…

Image and Video Processing · Electrical Eng. & Systems 2021-09-22 Cheng Chen , Quande Liu , Yueming Jin , Qi Dou , Pheng-Ann Heng

Accurate and robust medical image segmentation is fundamental and crucial for enhancing the autonomy of computer-aided diagnosis and intervention systems. Medical data collection normally involves different scanners, protocols, and…

Image and Video Processing · Electrical Eng. & Systems 2023-06-07 An Wang , Mobarakol Islam , Mengya Xu , Hongliang Ren

Standard Unsupervised Domain Adaptation (UDA) aims to transfer knowledge from a labeled source domain to an unlabeled target but usually requires simultaneous access to both source and target data. Moreover, UDA approaches commonly assume…

Computer Vision and Pattern Recognition · Computer Science 2024-04-17 Mattia Litrico , Davide Talon , Sebastiano Battiato , Alessio Del Bue , Mario Valerio Giuffrida , Pietro Morerio

Source free domain adaptation (SFDA) aims to transfer a trained source model to the unlabeled target domain without accessing the source data. However, the SFDA setting faces an effect bottleneck due to the absence of source data and target…

Machine Learning · Computer Science 2022-05-24 Fan Wang , Zhongyi Han , Zhiyan Zhang , Yilong Yin