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Unsupervised domain adaptation aims to transfer knowledge from a labeled source domain to an unlabeled target domain. Previous methods focus on learning domain-invariant features to decrease the discrepancy between the feature distributions…

Machine Learning · Computer Science 2021-06-30 Yuntao Du , Yinghao Chen , Fengli Cui , Xiaowen Zhang , Chongjun Wang

Domain Adaptation (DA) is important for deep learning-based medical image segmentation models to deal with testing images from a new target domain. As the source-domain data are usually unavailable when a trained model is deployed at a new…

Computer Vision and Pattern Recognition · Computer Science 2023-11-22 Jianghao Wu , Guotai Wang , Ran Gu , Tao Lu , Yinan Chen , Wentao Zhu , Tom Vercauteren , Sébastien Ourselin , Shaoting Zhang

Unsupervised Domain Adaptation (UDA) aims to adapt models trained on a source domain to a new target domain where no labelled data is available. In this work, we investigate the problem of UDA from a synthetic computer-generated domain to a…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Stephan Brehm , Sebastian Scherer , Rainer Lienhart

Unsupervised domain adaptation for semantic segmentation (UDA-SS) aims to transfer knowledge from labeled source data to unlabeled target data. However, traditional UDA-SS methods assume that category settings between source and target…

Computer Vision and Pattern Recognition · Computer Science 2025-06-09 Seun-An Choe , Keon-Hee Park , Jinwoo Choi , Gyeong-Moon Park

Simulation data can be accurately labeled and have been expected to improve the performance of data-driven algorithms, including object detection. However, due to the various domain inconsistencies from simulation to reality…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Meiying Zhang , Weiyuan Peng , Guangyao Ding , Chenyang Lei , Chunlin Ji , Qi Hao

Data-driven based approaches, in spite of great success in many tasks, have poor generalization when applied to unseen image domains, and require expensive cost of annotation especially for dense pixel prediction tasks such as semantic…

Computer Vision and Pattern Recognition · Computer Science 2021-03-09 Shuaijun Chen , Xu Jia , Jianzhong He , Yongjie Shi , Jianzhuang Liu

Domain shift happens in cross-domain scenarios commonly because of the wide gaps between different domains: when applying a deep learning model well-trained in one domain to another target domain, the model usually performs poorly. To…

Computer Vision and Pattern Recognition · Computer Science 2021-08-19 Munan Ning , Cheng Bian , Dong Wei , Chenglang Yuan , Yaohua Wang , Yang Guo , Kai Ma , Yefeng Zheng

Unsupervised domain adaptation (UDA) enables semantic segmentation models to generalize from a labeled source domain to an unlabeled target domain. However, existing UDA methods still struggle to bridge the domain gap due to cross-domain…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Yang Ou , Xiongwei Zhao , Xinye Yang , Yihan Wang , Yicheng Di , Rong Yuan , Xieyuanli Chen , Xu Zhu

The waive of labels in the target domain makes Unsupervised Domain Adaptation (UDA) an attractive technique in many real-world applications, though it also brings great challenges as model adaptation becomes harder without labeled target…

Machine Learning · Computer Science 2022-07-20 Tao Sun , Cheng Lu , Haibin Ling

Unsupervised domain adaptation (UDA) is a statistical learning problem when the distribution of training (source) data is different from that of test (target) data. In this setting, one has access to labeled data only from the source domain…

Machine Learning · Computer Science 2026-02-24 Seonghwi Kim , Sung Ho Jo , Wooseok Ha , Minwoo Chae

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

Prior Unsupervised Domain Adaptation (UDA) methods often aim to train a domain-invariant feature extractor, which may hinder the model from learning sufficiently discriminative features. To tackle this, a line of works based on prompt…

Machine Learning · Computer Science 2025-04-02 Hoang Phan , Lam Tran , Quyen Tran , Trung Le

Deep learning-based multi-source unsupervised domain adaptation (MUDA) has been actively studied in recent years. Compared with single-source unsupervised domain adaptation (SUDA), domain shift in MUDA exists not only between the source and…

Computer Vision and Pattern Recognition · Computer Science 2021-06-17 Zhipeng Luo , Xiaobing Zhang , Shijian Lu , Shuai Yi

Unsupervised domain adaptation (UDA) provides a strategy for improving machine learning performance in data-rich (target) domains where ground truth labels are inaccessible but can be found in related (source) domains. In cases where…

Machine Learning · Computer Science 2023-07-24 Garrett Wilson , Janardhan Rao Doppa , Diane J. Cook

Most existing methods for unsupervised domain adaptation (UDA) rely on a shared network to extract domain-invariant features. However, when facing multiple source domains, optimizing such a network involves updating the parameters of the…

Computer Vision and Pattern Recognition · Computer Science 2024-05-31 Haoran Chen , Xintong Han , Zuxuan Wu , Yu-Gang Jiang

Unsupervised Domain Adaptation (UDA) is essential for enabling semantic segmentation in new domains without requiring costly pixel-wise annotations. State-of-the-art (SOTA) UDA methods primarily use self-training with architecturally…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Beomseok Kang , Niluthpol Chowdhury Mithun , Abhinav Rajvanshi , Han-Pang Chiu , Supun Samarasekera

Source-Free Domain Adaptation (SFDA) enables domain adaptation for semantic segmentation of Remote Sensing Images (RSIs) using only a well-trained source model and unlabeled target domain data. However, the lack of ground-truth labels in…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Bin Wang , Fei Deng , Zeyu Chen , Zhicheng Yu , Yiguang Liu

Deep learning-based solutions for semantic segmentation suffer from significant performance degradation when tested on data with different characteristics than what was used during the training. Adapting the models using annotated data from…

Computer Vision and Pattern Recognition · Computer Science 2023-12-27 Xingchen Zhao , Niluthpol Chowdhury Mithun , Abhinav Rajvanshi , Han-Pang Chiu , Supun Samarasekera

Federated Learning (FL) is a promising approach for privacy-preserving collaborative learning. However, it faces significant challenges when dealing with domain shifts, especially when each client has access only to its source data and…

Computer Vision and Pattern Recognition · Computer Science 2025-03-14 Ali Abedi , Q. M. Jonathan Wu , Ning Zhang , Farhad Pourpanah

Unsupervised domain adaptation (UDA) plays a crucial role in object detection when adapting a source-trained detector to a target domain without annotated data. In this paper, we propose a novel and effective four-step UDA approach that…

Computer Vision and Pattern Recognition · Computer Science 2023-08-30 Mohamed L. Mekhalfi , Davide Boscaini , Fabio Poiesi