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Unsupervised domain adaptive object detection is a challenging vision task where object detectors are adapted from a label-rich source domain to an unlabeled target domain. Recent advances prove the efficacy of the adversarial based domain…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Kunyang Sun , Wei Lin , Haoqin Shi , Zhengming Zhang , Yongming Huang , Horst Bischof

Domain adaptation (DA) and domain generalization (DG) have emerged as a solution to the domain shift problem where the distribution of the source and target data is different. The task of DG is more challenging than DA as the target data is…

Computer Vision and Pattern Recognition · Computer Science 2019-12-02 Mohammad Mahfujur Rahman , Clinton Fookes , Mahsa Baktashmotlagh , Sridha Sridharan

Adversarial discriminative domain adaptation (ADDA) is an efficient framework for unsupervised domain adaptation in image classification, where the source and target domains are assumed to have the same classes, but no labels are available…

Computer Vision and Pattern Recognition · Computer Science 2019-11-12 Aaron Chadha , Yiannis Andreopoulos

Breakthroughs in unsupervised domain adaptation (uDA) can help in adapting models from a label-rich source domain to unlabeled target domains. Despite these advancements, there is a lack of research on how uDA algorithms, particularly those…

Machine Learning · Computer Science 2021-12-28 Shaoduo Gan , Akhil Mathur , Anton Isopoussu , Fahim Kawsar , Nadia Berthouze , Nicholas Lane

Domain adaptation aims to bridge the domain shifts between the source and the target domain. These shifts may span different dimensions such as fog, rainfall, etc. However, recent methods typically do not consider explicit prior knowledge…

Computer Vision and Pattern Recognition · Computer Science 2022-12-07 Qianyu Zhou , Qiqi Gu , Jiangmiao Pang , Xuequan Lu , Lizhuang Ma

Applying an object detector, which is neither trained nor fine-tuned on data close to the final application, often leads to a substantial performance drop. In order to overcome this problem, it is necessary to consider a shift between…

Computer Vision and Pattern Recognition · Computer Science 2020-05-27 Alexey Abramov , Christopher Bayer , Claudio Heller

Object recognition is a key enabler across industry and defense. As technology changes, algorithms must keep pace with new requirements and data. New modalities and higher resolution sensors should allow for increased algorithm robustness.…

Computer Vision and Pattern Recognition · Computer Science 2020-12-24 Samuel Rivera , Joel Klipfel , Deborah Weeks

Unsupervised domain adaptation aims to train a classification model from the labeled source domain for the unlabeled target domain. Since the data distributions of the two domains are different, the model often performs poorly on the target…

Computer Vision and Pattern Recognition · Computer Science 2022-03-10 Jieren Cheng , Le Liu , Xiangyan Tang , Wenxuan Tu , Boyi Liu , Ke Zhou , Qiaobo Da , Yue Yang

Domain adaptation methods reduce domain shift typically by learning domain-invariant features. Most existing methods are built on distribution matching, e.g., adversarial domain adaptation, which tends to corrupt feature discriminability.…

Machine Learning · Computer Science 2023-02-14 Zenan Huang , Jun Wen , Siheng Chen , Linchao Zhu , Nenggan Zheng

Source-free domain-adaptive object detection is an interesting but scarcely addressed topic. It aims at adapting a source-pretrained detector to a distinct target domain without resorting to source data during adaptation. So far, there is…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Mohamed Lamine Mekhalfi , Davide Boscaini , Fabio Poiesi

Conventional object detection models inevitably encounter a performance drop as the domain disparity exists. Unsupervised domain adaptive object detection is proposed recently to reduce the disparity between domains, where the source domain…

Computer Vision and Pattern Recognition · Computer Science 2020-07-06 Zhenwei He , Lei Zhang

Unsupervised domain adaptation for object detection is a challenging problem with many real-world applications. Unfortunately, it has received much less attention than supervised object detection. Models that try to address this task tend…

Computer Vision and Pattern Recognition · Computer Science 2021-06-11 Hongsong Wang , Shengcai Liao , Ling Shao

Source-Free Object Detection (SFOD) aims to adapt a source-pretrained object detector to a target domain without access to source data. However, existing SFOD methods predominantly rely on internal knowledge from the source model, which…

Computer Vision and Pattern Recognition · Computer Science 2026-01-22 Huizai Yao , Sicheng Zhao , Pengteng Li , Yi Cui , Shuo Lu , Weiyu Guo , Yunfan Lu , Yijie Xu , Hui Xiong

The current state-of-the-art methods in domain adaptive object detection (DAOD) use Mean Teacher self-labelling, where a teacher model, directly derived as an exponential moving average of the student model, is used to generate labels on…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Marc-Antoine Lavoie , Anas Mahmoud , Steven L. Waslander

In recent years, object detection has shown impressive results using supervised deep learning, but it remains challenging in a cross-domain environment. The variations of illumination, style, scale, and appearance in different domains can…

Computer Vision and Pattern Recognition · Computer Science 2019-08-12 Rongchang Xie , Fei Yu , Jiachao Wang , Yizhou Wang , Li Zhang

We introduce a novel unsupervised domain adaptation approach for object detection. We aim to alleviate the imperfect translation problem of pixel-level adaptations, and the source-biased discriminativity problem of feature-level adaptations…

Computer Vision and Pattern Recognition · Computer Science 2019-05-15 Taekyung Kim , Minki Jeong , Seunghyeon Kim , Seokeon Choi , Changick Kim

Unsupervised domain adaptation, which involves transferring knowledge from a label-rich source domain to an unlabeled target domain, can be used to substantially reduce annotation costs in the field of object detection. In this study, we…

Computer Vision and Pattern Recognition · Computer Science 2024-10-28 Kazuma Fujii , Hiroshi Kera , Kazuhiko Kawamoto

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

We present a novel approach to perform the unsupervised domain adaptation for object detection through forward-backward cyclic (FBC) training. Recent adversarial training based domain adaptation methods have shown their effectiveness on…

Computer Vision and Pattern Recognition · Computer Science 2020-02-04 Siqi Yang , Lin Wu , Arnold Wiliem , Brian C. Lovell

Domain Adaptation (DA), the process of effectively adapting task models learned on one domain, the source, to other related but distinct domains, the targets, with no or minimal retraining, is typically accomplished using the process of…

Computer Vision and Pattern Recognition · Computer Science 2019-09-30 Behnam Gholami , Pritish Sahu , Minyoung Kim , Vladimir Pavlovic