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Source-free domain adaptation (SFDA) aims to adapt a classifier to an unlabelled target data set by only using a pre-trained source model. However, the absence of the source data and the domain shift makes the predictions on the target data…

Computer Vision and Pattern Recognition · Computer Science 2022-08-17 Subhankar Roy , Martin Trapp , Andrea Pilzer , Juho Kannala , Nicu Sebe , Elisa Ricci , Arno Solin

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

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

Recent work on latent diffusion models (LDMs) has focused almost exclusively on generative tasks, leaving their potential for discriminative transfer largely unexplored. We introduce Discriminative Vicinity Diffusion (DVD), a novel…

Machine Learning · Computer Science 2025-11-13 Jing Wang , Wonho Bae , Jiahong Chen , Wenxu Wang , Junhyug Noh

Unsupervised domain adaptation (UDA) has proven to be very effective in transferring knowledge obtained from a source domain with labeled data to a target domain with unlabeled data. Owing to the lack of labeled data in the target domain…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Qing Yu , Go Irie , Kiyoharu Aizawa

A typical multi-source domain adaptation (MSDA) approach aims to transfer knowledge learned from a set of labeled source domains, to an unlabeled target domain. Nevertheless, prior works strictly assume that each source domain shares the…

Machine Learning · Computer Science 2022-07-13 Zixin Wang , Yadan Luo , Peng-Fei Zhang , Sen Wang , Zi Huang

Facial Expression Recognition (FER) from videos is a crucial task in various application areas, such as human-computer interaction and health diagnosis and monitoring (e.g., assessing pain and depression). Beyond the challenges of…

Computer Vision and Pattern Recognition · Computer Science 2025-06-02 Masoumeh Sharafi , Emma Ollivier , Muhammad Osama Zeeshan , Soufiane Belharbi , Marco Pedersoli , Alessandro Lameiras Koerich , Simon Bacon , Eric Granger

Foundation models (e.g., CLIP or DINOv2) have shown their impressive learning and transfer capabilities in a wide range of visual tasks, by training on a large corpus of data and adapting to specific downstream tasks. It is, however,…

Machine Learning · Computer Science 2023-11-06 Bin Deng , Kui Jia

Source-free domain adaptation (SFDA) has been exploited for cross-domain bearing fault diagnosis without access to source data. Current methods select partial target samples with reliable pseudo-labels for model adaptation, which is…

Machine Learning · Computer Science 2025-03-13 Wenyi Wu , Hao Zhang , Zhisen Wei , Xiao-Yuan Jing , Qinghua Zhang , Songsong Wu

Source-free domain adaptation (SFDA) aims to adapt a well-trained source model to an unlabelled target domain without accessing the source dataset, making it applicable in a variety of real-world scenarios. Existing SFDA methods ONLY assess…

Computer Vision and Pattern Recognition · Computer Science 2023-10-10 Longxiang Tang , Kai Li , Chunming He , Yulun Zhang , Xiu Li

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

When deploying pre-trained video object detectors in real-world scenarios, the domain gap between training and testing data caused by adverse image conditions often leads to performance degradation. Addressing this issue becomes…

Computer Vision and Pattern Recognition · Computer Science 2024-04-24 Xingguang Zhang , Chih-Hsien Chou

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

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

Conventional multi-source domain few-shot adaptation (MFDA) faces the challenge of further reducing the load on edge-side devices in low-resource scenarios. Considering the native language-supervised advantage of CLIP and the plug-and-play…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Kuanghong Liu , Jin Wang , Kangjian He , Dan Xu , Xuejie Zhang

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

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

Source-free domain adaptation (SFDA) is a challenging task that tackles domain shifts using only a pre-trained source model and unlabeled target data. Existing SFDA methods are restricted by the fundamental limitation of source-target…

Computer Vision and Pattern Recognition · Computer Science 2025-10-30 Yuyang Huang , Yabo Chen , Junyu Zhou , Wenrui Dai , Xiaopeng Zhang , Junni Zou , Hongkai Xiong , Qi Tian

This notebook paper presents an overview and comparative analysis of our systems designed for the following two tasks in Visual Domain Adaptation Challenge (VisDA-2019): multi-source domain adaptation and semi-supervised domain adaptation.…

Computer Vision and Pattern Recognition · Computer Science 2019-10-15 Yingwei Pan , Yehao Li , Qi Cai , Yang Chen , Ting Yao

There is a strong incentive to develop versatile learning techniques that can transfer the knowledge of class-separability from a labeled source domain to an unlabeled target domain in the presence of a domain-shift. Existing domain…

Computer Vision and Pattern Recognition · Computer Science 2020-04-10 Jogendra Nath Kundu , Naveen Venkat , Rahul M , R. Venkatesh Babu