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Recent state-of-the-art source-free domain adaptation (SFDA) methods have focused on learning meaningful cluster structures in the feature space, which have succeeded in adapting the knowledge from source domain to unlabeled target domain…

Machine Learning · Computer Science 2023-02-27 Li Yi , Gezheng Xu , Pengcheng Xu , Jiaqi Li , Ruizhi Pu , Charles Ling , A. Ian McLeod , Boyu Wang

Source-Free Unsupervised Domain Adaptation (SFUDA) is a challenging task where a model needs to be adapted to a new domain without access to target domain labels or source domain data. The primary difficulty in this task is that the model's…

Computer Vision and Pattern Recognition · Computer Science 2024-02-05 Yangyang Shu , Xiaofeng Cao , Qi Chen , Bowen Zhang , Ziqin Zhou , Anton van den Hengel , Lingqiao Liu

Solving the domain shift problem during inference is essential in medical imaging, as most deep-learning based solutions suffer from it. In practice, domain shifts are tackled by performing Unsupervised Domain Adaptation (UDA), where a…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Vibashan VS , Jeya Maria Jose Valanarasu , Vishal M. Patel

Unsupervised domain adaptation (UDA) has increasingly gained interests for its capacity to transfer the knowledge learned from a labeled source domain to an unlabeled target domain. However, typical UDA methods require concurrent access to…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Qinji Yu , Nan Xi , Junsong Yuan , Ziyu Zhou , Kang Dang , Xiaowei Ding

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

Unsupervised Domain Adaptation (UDA) can tackle the challenge that convolutional neural network(CNN)-based approaches for semantic segmentation heavily rely on the pixel-level annotated data, which is labor-intensive. However, existing UDA…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Yuang Liu , Wei Zhang , Jun Wang

Deep neural networks (DNNs) often perform poorly in the presence of domain shift and category shift. How to upcycle DNNs and adapt them to the target task remains an important open problem. Unsupervised Domain Adaptation (UDA), especially…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Sanqing Qu , Tianpei Zou , Florian Roehrbein , Cewu Lu , Guang Chen , Dacheng Tao , Changjun Jiang

Domain adaptation addresses the challenge of model performance degradation caused by domain gaps. In the typical setup for unsupervised domain adaptation, labeled data from a source domain and unlabeled data from a target domain are used to…

Computer Vision and Pattern Recognition · Computer Science 2025-05-16 Siqi Yin , Shaolei Liu , Manning Wang

Semi-supervised domain adaptation (SSDA) has been widely studied due to its ability to utilize a few labeled target data to improve the generalization ability of the model. However, existing methods only consider designing certain…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Xinyang Huang , Chuang Zhu , Bowen Zhang , Shanghang Zhang

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 a method for enhancing a model's performance on a target domain with inadequate annotated data by applying the information the model has acquired from a related source domain with sufficient labeled data. The…

Computer Vision and Pattern Recognition · Computer Science 2024-02-08 Shivang Chopra , Suraj Kothawade , Houda Aynaou , Aman Chadha

Over the past decade, domain adaptation has become a widely studied branch of transfer learning that aims to improve performance on target domains by leveraging knowledge from the source domain. Conventional domain adaptation methods often…

Machine Learning · Computer Science 2023-02-24 Zhiqi Yu , Jingjing Li , Zhekai Du , Lei Zhu , Heng Tao Shen

Compared to unsupervised domain adaptation, semi-supervised domain adaptation (SSDA) aims to significantly improve the classification performance and generalization capability of the model by leveraging the presence of a small amount of…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Jichang Li , Guanbin Li , Yizhou Yu

Source-free domain adaptation (SFDA), which involves adapting models without access to source data, is both demanding and challenging. Existing SFDA techniques typically rely on pseudo-labels generated from confidence levels, leading to…

Computer Vision and Pattern Recognition · Computer Science 2025-04-24 Xinru Meng , Han Sun , Jiamei Liu , Ningzhong Liu , Huiyu Zhou

It is desirable to transfer the knowledge stored in a well-trained source model onto non-annotated target domain in the absence of source data. However, state-of-the-art methods for source free domain adaptation (SFDA) are subject to strict…

Computer Vision and Pattern Recognition · Computer Science 2021-06-24 Xin Luo , Wei Chen , Yusong Tan , Chen Li , Yulin He , Xiaogang Jia

Standard Unsupervised Domain Adaptation (UDA) methods assume the availability of both source and target data during the adaptation. In this work, we investigate Source-free Unsupervised Domain Adaptation (SF-UDA), a specific case of UDA…

Computer Vision and Pattern Recognition · Computer Science 2023-03-20 Mattia Litrico , Alessio Del Bue , Pietro Morerio

Semi-supervised domain adaptation (SSDA) is quite a challenging problem requiring methods to overcome both 1) overfitting towards poorly annotated data and 2) distribution shift across domains. Unfortunately, a simple combination of domain…

Computer Vision and Pattern Recognition · Computer Science 2022-12-07 Can Qin , Lichen Wang , Qianqian Ma , Yu Yin , Huan Wang , Yun Fu

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

Automatically understanding emotions from visual data is a fundamental task for human behaviour understanding. While models devised for Facial Expression Recognition (FER) have demonstrated excellent performances on many datasets, they…

Computer Vision and Pattern Recognition · Computer Science 2022-10-12 Alessandro Conti , Paolo Rota , Yiming Wang , Elisa Ricci

Domain adaptation (DA) paves the way for label annotation and dataset bias issues by the knowledge transfer from a label-rich source domain to a related but unlabeled target domain. A mainstream of DA methods is to align the feature…

Computer Vision and Pattern Recognition · Computer Science 2021-08-13 Shuang Li , Mixue Xie , Fangrui Lv , Chi Harold Liu , Jian Liang , Chen Qin , Wei Li