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Unsupervised Domain Adaptation (UDA) aims to adapt the model trained on the labeled source domain to an unlabeled target domain. In this paper, we present Prototypical Contrast Adaptation (ProCA), a simple and efficient contrastive learning…

Computer Vision and Pattern Recognition · Computer Science 2022-07-15 Zhengkai Jiang , Yuxi Li , Ceyuan Yang , Peng Gao , Yabiao Wang , Ying Tai , Chengjie Wang

We consider unsupervised domain adaptation (UDA), where labeled data from a source domain (e.g., photographs) and unlabeled data from a target domain (e.g., sketches) are used to learn a classifier for the target domain. Conventional UDA…

Machine Learning · Computer Science 2022-12-05 Kendrick Shen , Robbie Jones , Ananya Kumar , Sang Michael Xie , Jeff Z. HaoChen , Tengyu Ma , Percy Liang

Unsupervised domain adaptation (UDA) aims at learning a machine learning model using a labeled source domain that performs well on a similar yet different, unlabeled target domain. UDA is important in many applications such as medicine,…

Machine Learning · Computer Science 2023-02-08 Yilmazcan Ozyurt , Stefan Feuerriegel , Ce Zhang

We present a novel approach for unsupervised domain adaptation (UDA) for natural images. A commonly-used objective for UDA schemes is to enhance domain alignment in representation space even if there is a domain shift in the input space.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Ravi Kant Gupta , Shounak Das , Amit Sethi

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

Unsupervised domain adaptation (UDA) aims to transfer and adapt knowledge from a labeled source domain to an unlabeled target domain. Traditionally, subspace-based methods form an important class of solutions to this problem. Despite their…

Machine Learning · Computer Science 2022-01-07 Kowshik Thopalli , Jayaraman J Thiagarajan , Rushil Anirudh , Pavan K Turaga

Unsupervised Domain adaptation (UDA) attempts to recognize the unlabeled target samples by building a learning model from a differently-distributed labeled source domain. Conventional UDA concentrates on extracting domain-invariant features…

Computer Vision and Pattern Recognition · Computer Science 2020-08-28 Taotao Jing , Zhengming Ding

Unsupervised domain adaptation (UDA) aims to align the labelled source distribution with the unlabelled target distribution to obtain domain-invariant predictive models. Since cross-modality medical data exhibit significant intra and…

Computer Vision and Pattern Recognition · Computer Science 2024-02-26 Fengming Lin , Yan Xia , Michael MacRaild , Yash Deo , Haoran Dou , Qiongyao Liu , Kun Wu , Nishant Ravikumar , Alejandro F. Frangi

Unsupervised Domain Adaptation (UDA) addresses the problem of performance degradation due to domain shift between training and testing sets, which is common in computer vision applications. Most existing UDA approaches are based on…

Computer Vision and Pattern Recognition · Computer Science 2019-05-14 Songsong Wu , Yan Yan , Hao Tang , Jianjun Qian , Jian Zhang , Xiao-Yuan Jing

In this paper, we propose a simple model referred as Contradistinguisher (CTDR) for unsupervised domain adaptation whose objective is to jointly learn to contradistinguish on unlabeled target domain in a fully unsupervised manner along with…

Machine Learning · Computer Science 2020-06-12 Sourabh Balgi , Ambedkar Dukkipati

Unsupervised domain adaptation (UDA) aims to improve the prediction performance in the target domain under distribution shifts from the source domain. The key principle of UDA is to minimize the divergence between the source and the target…

Computer Vision and Pattern Recognition · Computer Science 2022-11-17 JoonHo Lee , Gyemin Lee

Class-Incremental Unsupervised Domain Adaptation (CI-UDA) aims to adapt a model from a labeled source domain to an unlabeled target domain, where the sets of potential target classes appearing at different time steps are disjoint and are…

Computer Vision and Pattern Recognition · Computer Science 2025-09-16 Kerun Mi , Guoliang Kang , Guangyu Li , Lin Zhao , Tao Zhou , Chen Gong

Monocular depth estimation (MDE) has attracted intense study due to its low cost and critical functions for robotic tasks such as localization, mapping and obstacle detection. Supervised approaches have led to great success with the advance…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Shao-Yuan Lo , Wei Wang , Jim Thomas , Jingjing Zheng , Vishal M. Patel , Cheng-Hao Kuo

Deep learning has revolutionized the early detection of breast cancer, resulting in a significant decrease in mortality rates. However, difficulties in obtaining annotations and huge variations in distribution between training sets and real…

Computer Vision and Pattern Recognition · Computer Science 2024-09-02 Yuxiang Yang , Xinyi Zeng , Pinxian Zeng , Binyu Yan , Xi Wu , Jiliu Zhou , Yan Wang

Unsupervised domain adaptive (UDA) algorithms can markedly enhance the performance of object detectors under conditions of domain shifts, thereby reducing the necessity for extensive labeling and retraining. Current domain adaptive object…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Tianheng Qiu , Ka Lung Law , Guanghua Pan , Jufei Wang , Xin Gao , Xuan Huang , Hu Wei

We investigate a practical domain adaptation task, called source-free domain adaptation (SFUDA), where the source-pretrained model is adapted to the target domain without access to the source data. Existing techniques mainly leverage…

Computer Vision and Pattern Recognition · Computer Science 2022-11-15 Ziyi Zhang , Weikai Chen , Hui Cheng , Zhen Li , Siyuan Li , Liang Lin , Guanbin Li

In unsupervised domain adaptation (UDA), where models are trained on source data (e.g., synthetic) and adapted to target data (e.g., real-world) without target annotations, addressing the challenge of significant class imbalance remains an…

Computer Vision and Pattern Recognition · Computer Science 2024-07-02 Roberto Alcover-Couso , Marcos Escudero-Viñolo , Juan C. SanMiguel , Jesus Bescós

3D point cloud semantic segmentation (PCSS) is a cornerstone for environmental perception in robotic systems and autonomous driving, enabling precise scene understanding through point-wise classification. While unsupervised domain…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Junjie Chen , Yuecong Xu , Haosheng Li , Kemi Ding

Existing approaches for unsupervised domain adaptive object detection perform feature alignment via adversarial training. While these methods achieve reasonable improvements in performance, they typically perform category-agnostic domain…

Computer Vision and Pattern Recognition · Computer Science 2021-04-06 Vibashan VS , Vikram Gupta , Poojan Oza , Vishwanath A. Sindagi , Vishal M. Patel

Triplet loss, one of the deep metric learning (DML) methods, is to learn the embeddings where examples from the same class are closer than examples from different classes. Motivated by DML, we propose an effective BP-Triplet Loss for…

Computer Vision and Pattern Recognition · Computer Science 2022-02-22 Shanshan Wang , Lei Zhang , Pichao Wang