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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

Source-free object detection (SFOD) aims to transfer a detector pre-trained on a label-rich source domain to an unlabeled target domain without seeing source data. While most existing SFOD methods generate pseudo labels via a…

Computer Vision and Pattern Recognition · Computer Science 2023-01-12 Qiaosong Chu , Shuyan Li , Guangyi Chen , Kai Li , Xiu Li

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

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

We study a practical domain adaptation task, called source-free unsupervised domain adaptation (UDA) problem, in which we cannot access source domain data due to data privacy issues but only a pre-trained source model and unlabeled target…

Computer Vision and Pattern Recognition · Computer Science 2021-06-30 Zhen Qiu , Yifan Zhang , Hongbin Lin , Shuaicheng Niu , Yanxia Liu , Qing Du , Mingkui Tan

This work presents an approach for incrementally updating deep neural network (DNN) models in a non-stationary environment. DNN models are sensitive to changes in input data distribution, which limits their application to problem settings…

Machine Learning · Computer Science 2023-01-31 Abhinit Kumar Ambastha , Leong Tze Yun

Existing generic unsupervised domain adaptation approaches require access to both a large labeled source dataset and a sufficient unlabeled target dataset during adaptation. However, collecting a large dataset, even if unlabeled, is a…

Computer Vision and Pattern Recognition · Computer Science 2025-03-07 Nimra Dilawar , Sara Nadeem , Javed Iqbal , Waqas Sultani , Mohsen Ali

Domain shift occurs when training (source) and test (target) data diverge in their distribution. Source-Free Domain Adaptation (SFDA) addresses this domain shift problem, aiming to adopt a trained model on the source domain to the target…

Computer Vision and Pattern Recognition · Computer Science 2024-10-16 Hyeonwoo Cho , Chanmin Park , Dong-Hee Kim , Jinyoung Kim , Won Hwa Kim

Semi-Supervised Domain Adaptation (SSDA) involves learning to classify unseen target data with a few labeled and lots of unlabeled target data, along with many labeled source data from a related domain. Current SSDA approaches usually aim…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Yu-Chu Yu , Hsuan-Tien Lin

Unsupervised domain adaptation (UDA) for semantic segmentation addresses the cross-domain problem with fine source domain labels. However, the acquisition of semantic labels has always been a difficult step, many scenarios only have weak…

Computer Vision and Pattern Recognition · Computer Science 2022-10-06 Shengjie Liu , Chuang Zhu , Wenqi Tang

Graph Neural Networks (GNNs) have achieved great success on a variety of tasks with graph-structural data, among which node classification is an essential one. Unsupervised Graph Domain Adaptation (UGDA) shows its practical value of…

Machine Learning · Computer Science 2023-12-06 Haitao Mao , Lun Du , Yujia Zheng , Qiang Fu , Zelin Li , Xu Chen , Shi Han , Dongmei Zhang

Source-free domain adaptation (SFDA) aims to adapt a source model trained on a fully-labeled source domain to a related but unlabeled target domain. While the source model is a key avenue for acquiring target pseudolabels, the generated…

Computer Vision and Pattern Recognition · Computer Science 2024-10-04 Wenyu Zhang , Li Shen , Chuan-Sheng Foo

Unsupervised domain adaptation (UDA) aims to learn a model trained on source domain and performs well on unlabeled target domain. In medical image segmentation field, most existing UDA methods depend on adversarial learning to address the…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Shaolei Liu , Siqi Yin , Linhao Qu , Manning Wang

Developing computational pathology models is essential for reducing manual tissue typing from whole slide images, transferring knowledge from the source domain to an unlabeled, shifted target domain, and identifying unseen categories. We…

Computer Vision and Pattern Recognition · Computer Science 2024-01-26 Guillaume Vray , Devavrat Tomar , Jean-Philippe Thiran , Behzad Bozorgtabar

Domain adaptive semantic segmentation enables robust pixel-wise understanding in real-world driving scenes. Source-free domain adaptation, as a more practical technique, addresses the concerns of data privacy and storage limitations in…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Yihong Cao , Hui Zhang , Xiao Lu , Zheng Xiao , Kailun Yang , Yaonan Wang

Standard unsupervised domain adaptation methods adapt models from a source to a target domain using labeled source data and unlabeled target data jointly. In model adaptation, on the other hand, access to the labeled source data is…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 David Bruggemann , Christos Sakaridis , Tim Brödermann , Luc Van Gool

The prime challenge in unsupervised domain adaptation (DA) is to mitigate the domain shift between the source and target domains. Prior DA works show that pretext tasks could be used to mitigate this domain shift by learning domain…

Computer Vision and Pattern Recognition · Computer Science 2022-07-28 Jogendra Nath Kundu , Suvaansh Bhambri , Akshay Kulkarni , Hiran Sarkar , Varun Jampani , R. Venkatesh Babu

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

Domain Adaptation (DA) is crucial for robust deployment of medical image segmentation models when applied to new clinical centers with significant domain shifts. Source-Free Domain Adaptation (SFDA) is appealing as it can deal with privacy…

Computer Vision and Pattern Recognition · Computer Science 2025-06-12 Xinya Liu , Jianghao Wu , Tao Lu , Shaoting Zhang , Guotai Wang

Convolutional networks (ConvNets) have achieved great successes in various challenging vision tasks. However, the performance of ConvNets would degrade when encountering the domain shift. The domain adaptation is more significant while…

Computer Vision and Pattern Recognition · Computer Science 2018-06-20 Qi Dou , Cheng Ouyang , Cheng Chen , Hao Chen , Pheng-Ann Heng