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Unsupervised Domain Adaptation (UDA) is a learning technique that transfers knowledge learned in the source domain from labelled training data to the target domain with only unlabelled data. It is of significant importance to medical image…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Lingrui Li , Yanfeng Zhou , Ge Yang

Recent studies have shown that pseudo labels can contribute to unsupervised domain adaptation (UDA) for speaker verification. Inspired by the self-training strategies that use an existing classifier to label the unlabeled data for…

Machine Learning · Computer Science 2023-06-21 Haiquan Mao , Feng Hong , Man-wai Mak

Unsupervised domain adaptation has been widely adopted to generalize models for unlabeled data in a target domain, given labeled data in a source domain, whose data distributions differ from the target domain. However, existing works are…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Weiming Zhuang , Xin Gan , Yonggang Wen , Xuesen Zhang , Shuai Zhang , Shuai Yi

Unsupervised domain adaptation (UDA) via deep learning has attracted appealing attention for tackling domain-shift problems caused by distribution discrepancy across different domains. Existing UDA approaches highly depend on the…

Computer Vision and Pattern Recognition · Computer Science 2023-01-10 Yuqi Fang , Pew-Thian Yap , Weili Lin , Hongtu Zhu , Mingxia Liu

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

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

Source-free Unsupervised Domain Adaptation (SFDA) aims to classify target samples by only accessing a pre-trained source model and unlabelled target samples. Since no source data is available, transferring the knowledge from the source…

Computer Vision and Pattern Recognition · Computer Science 2024-05-14 Jinkun Jiang , Qingxuan Lv , Yuezun Li , Yong Du , Sheng Chen , Hui Yu , Junyu Dong

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) 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

Person Re-Identification (re-ID) aims at retrieving images of the same person taken by different cameras. A challenge for re-ID is the performance preservation when a model is used on data of interest (target data) which belong to a…

Computer Vision and Pattern Recognition · Computer Science 2020-09-22 Fabian Dubourvieux , Romaric Audigier , Angelique Loesch , Samia Ainouz , Stephane Canu

Source-free unsupervised domain adaptation (SFUDA) aims to enable the utilization of a pre-trained source model in an unlabeled target domain without access to source data. Self-training is a way to solve SFUDA, where confident target…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Xi Chen , Haosen Yang , Huicong Zhang , Hongxun Yao , Xiatian Zhu

Source-free Domain Adaptation (SFDA) aims to adapt a pre-trained source model to the unlabeled target domain without accessing the well-labeled source data, which is a much more practical setting due to the data privacy, security, and…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Sanqing Qu , Guang Chen , Jing Zhang , Zhijun Li , Wei He , Dacheng Tao

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

Adapting a medical image segmentation model to a new domain is important for improving its cross-domain transferability, and due to the expensive annotation process, Unsupervised Domain Adaptation (UDA) is appealing where only unlabeled…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Jianghao Wu , Dong Guo , Guotai Wang , Qiang Yue , Huijun Yu , Kang Li , Shaoting Zhang

Unsupervised Domain Adaptation (UDA) transfers predictive models from a fully-labeled source domain to an unlabeled target domain. In some applications, however, it is expensive even to collect labels in the source domain, making most…

Computer Vision and Pattern Recognition · Computer Science 2021-04-01 Xiangyu Yue , Zangwei Zheng , Shanghang Zhang , Yang Gao , Trevor Darrell , Kurt Keutzer , Alberto Sangiovanni Vincentelli

While huge volumes of unlabeled data are generated and made available in many domains, the demand for automated understanding of visual data is higher than ever before. Most existing machine learning models typically rely on massive amounts…

Computer Vision and Pattern Recognition · Computer Science 2021-12-14 Youshan Zhang

Domain adaptation assumes that samples from source and target domains are freely accessible during a training phase. However, such an assumption is rarely plausible in the real-world and possibly causes data-privacy issues, especially when…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Youngeun Kim , Donghyeon Cho , Kyeongtak Han , Priyadarshini Panda , Sungeun Hong

We consider the problem of source-free unsupervised category-level pose estimation from only RGB images to a target domain without any access to source domain data or 3D annotations during adaptation. Collecting and annotating real-world 3D…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Prakhar Kaushik , Aayush Mishra , Adam Kortylewski , Alan Yuille

Face anti-spoofing (FAS) approaches based on unsupervised domain adaption (UDA) have drawn growing attention due to promising performances for target scenarios. Most existing UDA FAS methods typically fit the trained models to the target…

Computer Vision and Pattern Recognition · Computer Science 2022-11-24 Qianyu Zhou , Ke-Yue Zhang , Taiping Yao , Ran Yi , Kekai Sheng , Shouhong Ding , Lizhuang Ma

Domain adaptation (DA) is a representation learning methodology that transfers knowledge from a label-sufficient source domain to a label-scarce target domain. While most of early methods are focused on unsupervised DA (UDA), several…

Computer Vision and Pattern Recognition · Computer Science 2021-04-02 Yoonhyung Kim , Changick Kim