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Most advanced unsupervised anomaly detection (UAD) methods rely on modeling feature representations of frozen encoder networks pre-trained on large-scale datasets, e.g. ImageNet. However, the features extracted from the encoders that are…

Computer Vision and Pattern Recognition · Computer Science 2023-10-25 Jia Guo , Shuai Lu , Lize Jia , Weihang Zhang , Huiqi Li

Source-free domain adaptation (SFDA) aims to adapt a model trained on labelled data in a source domain to unlabelled data in a target domain without access to the source-domain data during adaptation. Existing methods for SFDA leverage…

Machine Learning · Computer Science 2022-03-18 Cian Eastwood , Ian Mason , Christopher K. I. Williams , Bernhard Schölkopf

A self-supervised multi-task learning (SSMTL) framework for video anomaly detection was recently introduced in literature. Due to its highly accurate results, the method attracted the attention of many researchers. In this work, we revisit…

The external visual inspections of rolling stock's underfloor equipment are currently being performed via human visual inspection. In this study, we attempt to partly automate visual inspection by investigating anomaly inspection algorithms…

Computer Vision and Pattern Recognition · Computer Science 2022-12-23 Yohei Baba , Takuro Hoshi , Ryosuke Mori , Gaurang Gavai

Transformer-based methods have recently achieved significant success in 3D human pose estimation, owing to their strong ability to model long-range dependencies. However, relying solely on the global attention mechanism is insufficient for…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Guangsheng Xu , Guoyi Zhang , Lejia Ye , Shuwei Gan , Xiaohu Zhang , Xia Yang

3D object detectors are fundamental components of perception systems in autonomous vehicles. While these detectors achieve remarkable performance on standard autonomous driving benchmarks, they often struggle to generalize across different…

Computer Vision and Pattern Recognition · Computer Science 2026-01-01 Bartłomiej Olber , Jakub Winter , Paweł Wawrzyński , Andrii Gamalii , Daniel Górniak , Marcin Łojek , Robert Nowak , Krystian Radlak

In recent year, tremendous strides have been made in face detection thanks to deep learning. However, most published face detectors deteriorate dramatically as the faces become smaller. In this paper, we present the Small Faces Attention…

Computer Vision and Pattern Recognition · Computer Science 2019-12-02 Shi Luo , Xiongfei Li , Rui Zhu , Xiaoli Zhang

The unsupervised visual inspection of defects in industrial products poses a significant challenge due to substantial variations in product surfaces. Current unsupervised models struggle to strike a balance between detecting texture and…

Computer Vision and Pattern Recognition · Computer Science 2023-11-22 Peng Wang , Haiming Yao , Wenyong Yu

The surface quality inspection of manufacturing parts based on 3D point cloud data has attracted increasing attention in recent years. The reason is that the 3D point cloud can capture the entire surface of manufacturing parts, unlike the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-12 Xuanming Cao , Chengyu Tao , Juan Du

Source-free domain adaptation (SFDA) is compelling because it allows adapting an off-the-shelf model to a new domain using only unlabelled data. In this work, we apply existing SFDA techniques to a challenging set of naturally-occurring…

Machine Learning · Computer Science 2023-06-27 Malik Boudiaf , Tom Denton , Bart van Merriënboer , Vincent Dumoulin , Eleni Triantafillou

One of the most promising use-cases for machine learning in industrial manufacturing is the early detection of defective products using a quality control system. Such a system can save costs and reduces human errors due to the monotonous…

Computer Vision and Pattern Recognition · Computer Science 2024-11-25 Miriam Alber , Christoph Hönes , Patrick Baier

Deepfake attribution (DFA) aims to perform multiclassification on different facial manipulation techniques, thereby mitigating the detrimental effects of forgery content on the social order and personal reputations. However, previous…

Computer Vision and Pattern Recognition · Computer Science 2025-05-08 Ming-Hui Liu , Xiao-Qian Liu , Xin Luo , Xin-Shun Xu

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

Recent advances in unsupervised domain adaptation (UDA) techniques have witnessed great success in cross-domain computer vision tasks, enhancing the generalization ability of data-driven deep learning architectures by bridging the domain…

Computer Vision and Pattern Recognition · Computer Science 2022-01-07 Dongnan Liu , Chaoyi Zhang , Yang Song , Heng Huang , Chenyu Wang , Michael Barnett , Weidong Cai

Obtaining ground truth data in medical imaging has difficulties due to the fact that it requires a lot of annotating time from the experts in the field. Also, when trained with supervised learning, it detects only the cases included in the…

Computer Vision and Pattern Recognition · Computer Science 2022-12-26 Inha Kang , Jinah Park

Manufacturing industries require efficient and voluminous production of high-quality finished goods. In the context of Industry 4.0, visual anomaly detection poses an optimistic solution for automatically controlled product quality with…

Computer Vision and Pattern Recognition · Computer Science 2023-11-06 Devang Mehta , Noah Klarmann

Anomaly detection is commonly pursued as a one-class classification problem, where models can only learn from normal training samples, while being evaluated on both normal and abnormal test samples. Among the successful approaches for…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Nicolae-Catalin Ristea , Neelu Madan , Radu Tudor Ionescu , Kamal Nasrollahi , Fahad Shahbaz Khan , Thomas B. Moeslund , Mubarak Shah

Surface anomaly classification is critical for manufacturing system fault diagnosis and quality control. However, the following challenges always hinder accurate anomaly classification in practice: (i) Anomaly patterns exhibit intra-class…

Machine Learning · Statistics 2025-02-18 Xuanming Cao , Chengyu Tao , Juan Du

The 2D object detection in clean images has been a well studied topic, but its vulnerability against adversarial attack is still worrying. Existing work has improved robustness of object detectors by adversarial training, at the same time,…

Computer Vision and Pattern Recognition · Computer Science 2021-08-27 Weipeng Xu , Hongcheng Huang , Shaoyou Pan

Anomaly detection is crucial for ensuring the stability and reliability of web service systems. Logs and metrics contain multiple information that can reflect the system's operational state and potential anomalies. Thus, existing anomaly…

Software Engineering · Computer Science 2025-01-29 Xixuan Yang , Xin Huang , Chiming Duan , Tong Jia , Shandong Dong , Ying Li , Gang Huang