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This work tackles the unsupervised cross-domain object detection problem which aims to generalize a pre-trained object detector to a new target domain without labels. We propose an uncertainty-aware model adaptation method, which is based…

计算机视觉与模式识别 · 计算机科学 2021-08-31 Minjie Cai , Minyi Luo , Xionghu Zhong , Hao Chen

Unsupervised person re-identification aims to retrieve images of a specified person without identity labels. Many recent unsupervised Re-ID approaches adopt clustering-based methods to measure cross-camera feature similarity to roughly…

计算机视觉与模式识别 · 计算机科学 2025-04-15 Pengna Li , Kangyi Wu , Wenli Huang , Sanping Zhou , Jinjun Wang

Domain adaptive person re-identification (re-ID) is a challenging task due to the large discrepancy between the source domain and the target domain. To reduce the domain discrepancy, existing methods mainly attempt to generate pseudo labels…

计算机视觉与模式识别 · 计算机科学 2020-09-15 Junhui Yin , Jiayan Qiu , Siqing Zhang , Zhanyu Ma , Jun Guo

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…

计算机视觉与模式识别 · 计算机科学 2021-12-14 Youshan Zhang

Systems for person re-identification (ReID) can achieve a high accuracy when trained on large fully-labeled image datasets. However, the domain shift typically associated with diverse operational capture conditions (e.g., camera viewpoints…

计算机视觉与模式识别 · 计算机科学 2022-11-08 Djebril Mekhazni , Maximilien Dufau , Christian Desrosiers , Marco Pedersoli , Eric Granger

Unsupervised object re-identification targets at learning discriminative representations for object retrieval without any annotations. Clustering-based methods conduct training with the generated pseudo labels and currently dominate this…

计算机视觉与模式识别 · 计算机科学 2021-08-24 Xiao Zhang , Yixiao Ge , Yu Qiao , Hongsheng Li

This paper introduces the first fully unsupervised domain adaptation (UDA) framework for unsupervised anomaly detection (UAD). The performance of UAD techniques degrades significantly in the presence of a domain shift, difficult to avoid in…

机器学习 · 计算机科学 2025-12-29 Nesryne Mejri , Enjie Ghorbel , Anis Kacem , Pavel Chernakov , Niki Foteinopoulou , Djamila Aouada

The divergence between labeled training data and unlabeled testing data is a significant challenge for recent deep learning models. Unsupervised domain adaptation (UDA) attempts to solve such problem. Recent works show that self-training is…

计算机视觉与模式识别 · 计算机科学 2025-03-26 Chuang Zhu , Kebin Liu , Wenqi Tang , Ke Mei , Jiaqi Zou , Tiejun Huang

Unsupervised domain adaptation (UDA) is to make predictions for unlabeled data on a target domain, given labeled data on a source domain whose distribution shifts from the target one. Mainstream UDA methods learn aligned features between…

计算机视觉与模式识别 · 计算机科学 2020-03-20 Hui Tang , Ke Chen , Kui Jia

Unsupervised Re-ID methods aim at learning robust and discriminative features from unlabeled data. However, existing methods often ignore the relationship between module parameters of Re-ID framework and feature distributions, which may…

计算机视觉与模式识别 · 计算机科学 2023-03-14 Ziqi He , Mengjia Xue , Yunhao Du , Zhicheng Zhao , Fei Su

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…

机器学习 · 计算机科学 2023-06-21 Haiquan Mao , Feng Hong , Man-wai Mak

Many unsupervised domain adaptive (UDA) person re-identification (ReID) approaches combine clustering-based pseudo-label prediction with feature fine-tuning. However, because of domain gap, the pseudo-labels are not always reliable and…

计算机视觉与模式识别 · 计算机科学 2020-12-18 Kecheng Zheng , Cuiling Lan , Wenjun Zeng , Zhizheng Zhang , Zheng-Jun Zha

The majority of existing Unsupervised Domain Adaptation (UDA) methods presumes source and target domain data to be simultaneously available during training. Such an assumption may not hold in practice, as source data is often inaccessible…

计算机视觉与模式识别 · 计算机科学 2021-03-31 Waqar Ahmed , Pietro Morerio , Vittorio Murino

Unsupervised person re-identification (Re-ID) aims to learn a feature network with cross-camera retrieval capability in unlabelled datasets. Although the pseudo-label based methods have achieved great progress in Re-ID, their performance in…

计算机视觉与模式识别 · 计算机科学 2024-08-20 Mingxiao Zheng , Yanpeng Qu , Changjing Shang , Longzhi Yang , Qiang Shen

Unsupervised Domain Adaptation (UDA), a branch of transfer learning where labels for target samples are unavailable, has been widely researched and developed in recent years with the help of adversarially trained models. Although existing…

计算机视觉与模式识别 · 计算机科学 2022-01-31 Changwei Xu , Jianfei Yang , Haoran Tang , Han Zou , Cheng Lu , Tianshuo Zhang

Unsupervised Domain Adaptive Object Detection (UDA-OD) uses unlabelled data to improve the reliability of robotic vision systems in open-world environments. Previous approaches to UDA-OD based on self-training have been effective in…

计算机视觉与模式识别 · 计算机科学 2023-08-29 Nicolas Harvey Chapman , Feras Dayoub , Will Browne , Christopher Lehnert

Recent works on unsupervised domain adaptation (UDA) focus on the selection of good pseudo-labels as surrogates for the missing labels in the target data. However, source domain bias that deteriorates the pseudo-labels can still exist since…

计算机视觉与模式识别 · 计算机科学 2022-05-31 Can Zhang , Gim Hee Lee

Person re-identification (Re-ID) across multiple datasets is a challenging task due to two main reasons: the presence of large cross-dataset distinctions and the absence of annotated target instances. To address these two issues, this paper…

计算机视觉与模式识别 · 计算机科学 2024-06-18 Yangru Huang , Peixi Peng , Yi Jin , Yidong Li , Junliang Xing , Shiming Ge

Vehicle re-identification (Re-ID) is an active task due to its importance in large-scale intelligent monitoring in smart cities. Despite the rapid progress in recent years, most existing methods handle vehicle Re-ID task in a supervised…

计算机视觉与模式识别 · 计算机科学 2020-11-19 Aihua Zheng , Xia Sun , Chenglong Li , Jin Tang

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…

计算机视觉与模式识别 · 计算机科学 2024-04-17 Mattia Litrico , Davide Talon , Sebastiano Battiato , Alessio Del Bue , Mario Valerio Giuffrida , Pietro Morerio