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Logical anomaly detection in industrial inspection remains challenging due to variations in visual appearance (e.g., background clutter, illumination shift, and blur), which often distract vision-centric detectors from identifying…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Hiroto Nakata , Yawen Zou , Shunsuke Sakai , Shun Maeda , Chunzhi Gu , Yijin Wei , Shangce Gao , Chao Zhang

Unsupervised anomaly detection encompasses diverse applications in industrial settings where a high-throughput and precision is imperative. Early works were centered around one-class-one-model paradigm, which poses significant challenges in…

Computer Vision and Pattern Recognition · Computer Science 2024-05-13 Sushovan Jena , Vishwas Saini , Ujjwal Shaw , Pavitra Jain , Abhay Singh Raihal , Anoushka Banerjee , Sharad Joshi , Ananth Ganesh , Arnav Bhavsar

Knowledge Distillation-based Anomaly Detection (KDAD) methods rely on the teacher-student paradigm to detect and segment anomalous regions by contrasting the unique features extracted by both networks. However, existing KDAD methods suffer…

Computer Vision and Pattern Recognition · Computer Science 2023-07-25 Peng Xing , Hao Tang , Jinhui Tang , Zechao Li

Anomaly detection (AD) in chemical processes based on deep learning offers significant opportunities but requires large, diverse, and well-annotated training datasets that are rarely available from industrial operations. In a recent work,…

Machine Learning · Computer Science 2026-04-15 Jennifer Werner , Justus Arweiler , Indra Jungjohann , Jochen Schmid , Fabian Jirasek , Hans Hasse , Michael Bortz

Medical image anomaly detection faces unique challenges due to subtle, heterogeneous anomalies embedded in complex anatomical structures. Through systematic Grad-CAM analysis, we reveal that discriminative activation maps fail on medical…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Xijun Lu , Hongying Liu , Fanhua Shang , Yanming Hui , Liang Wan

Diffusion models (DMs) have emerged as a powerful class of generative AI models, showing remarkable potential in anomaly detection (AD) tasks across various domains, such as cybersecurity, fraud detection, healthcare, and manufacturing. The…

Machine Learning · Computer Science 2025-02-28 Jing Liu , Zhenchao Ma , Zepu Wang , Chenxuanyin Zou , Jiayang Ren , Zehua Wang , Liang Song , Bo Hu , Yang Liu , Victor C. M. Leung

Contemporary machine learning requires training large neural networks on massive datasets and thus faces the challenges of high computational demands. Dataset distillation, as a recent emerging strategy, aims to compress real-world datasets…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 Peng Sun , Bei Shi , Daiwei Yu , Tao Lin

We introduce a new RGB-D object dataset captured in the wild called WildRGB-D. Unlike most existing real-world object-centric datasets which only come with RGB capturing, the direct capture of the depth channel allows better 3D annotations…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Hongchi Xia , Yang Fu , Sifei Liu , Xiaolong Wang

With the wide application of knowledge distillation between an ImageNet pre-trained teacher model and a learnable student model, unsupervised anomaly detection has witnessed a significant achievement in the past few years. The success of…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Canhui Tang , Sanping Zhou , Yizhe Li , Yonghao Dong , Le Wang

Industrial Anomaly Detection (IAD) is a cornerstone for ensuring operational safety, maintaining product quality, and optimizing manufacturing efficiency. However, the advancement of IAD algorithms is severely hindered by the limitations of…

Computer Vision and Pattern Recognition · Computer Science 2026-02-13 Wenbing Zhu , Chengjie Wang , Bin-Bin Gao , Jiangning Zhang , Guannan Jiang , Jie Hu , Zhenye Gan , Lidong Wang , Ziqing Zhou , Jianghui Zhang , Linjie Cheng , Yurui Pan , Bo Peng , Mingmin Chi , Lizhuang Ma

Anomaly detection (AD) plays a vital role across a wide range of real-world domains by identifying data instances that deviate from expected patterns, potentially signaling critical events such as system failures, fraudulent activities, or…

Machine Learning · Computer Science 2025-07-11 Amirhossein Sadough , Mahyar Shahsavari , Mark Wijtvliet , Marcel van Gerven

Due to the data imbalance and the diversity of defects, student-teacher networks (S-T) are favored in unsupervised anomaly detection, which explores the discrepancy in feature representation derived from the knowledge distillation process…

Computer Vision and Pattern Recognition · Computer Science 2024-02-02 Liyi Yao , Shaobing Gao

Graph-level anomaly detection (GAD) describes the problem of detecting graphs that are abnormal in their structure and/or the features of their nodes, as compared to other graphs. One of the challenges in GAD is to devise graph…

Computer Vision and Pattern Recognition · Computer Science 2021-12-21 Rongrong Ma , Guansong Pang , Ling Chen , Anton van den Hengel

Anomaly detection is a crucial process in industrial manufacturing and has made significant advancements recently. However, there is a large variance between the data used in the development and the data collected by the production…

Computer Vision and Pattern Recognition · Computer Science 2024-09-11 Tianwu Lei , Bohan Wang , Silin Chen , Shurong Cao , Ningmu Zou

Reconstruction-based approaches have achieved remarkable outcomes in anomaly detection. The exceptional image reconstruction capabilities of recently popular diffusion models have sparked research efforts to utilize them for enhanced…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Haoyang He , Jiangning Zhang , Hongxu Chen , Xuhai Chen , Zhishan Li , Xu Chen , Yabiao Wang , Chengjie Wang , Lei Xie

Visual anomaly detection (AD) presents significant challenges due to the scarcity of anomalous data samples. While numerous works have been proposed to synthesize anomalous samples, these synthetic anomalies often lack authenticity or…

Computer Vision and Pattern Recognition · Computer Science 2025-06-12 Han Sun , Yunkang Cao , Hao Dong , Olga Fink

RGB-D salient object detection (SOD) demonstrates its superiority on detecting in complex environments due to the additional depth information introduced in the data. Inevitably, an independent stream is introduced to extract features from…

Computer Vision and Pattern Recognition · Computer Science 2022-06-03 Guangyu Ren , Yinxiao Yu , Hengyan Liu , Tania Stathaki

Though anomaly detection (AD) can be viewed as a classification problem (nominal vs. anomalous) it is usually treated in an unsupervised manner since one typically does not have access to, or it is infeasible to utilize, a dataset that…

Machine Learning · Computer Science 2023-01-30 Lukas Ruff , Robert A. Vandermeulen , Billy Joe Franks , Klaus-Robert Müller , Marius Kloft

Recent Semi-Supervised Object Detection (SS-OD) methods are mainly based on self-training, i.e., generating hard pseudo-labels by a teacher model on unlabeled data as supervisory signals. Although they achieved certain success, the limited…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Qiushan Guo , Yao Mu , Jianyu Chen , Tianqi Wang , Yizhou Yu , Ping Luo

Multi-view camera-based 3D object detection has become popular due to its low cost, but accurately inferring 3D geometry solely from camera data remains challenging and may lead to inferior performance. Although distilling precise 3D…

Computer Vision and Pattern Recognition · Computer Science 2024-01-09 Haimei Zhao , Qiming Zhang , Shanshan Zhao , Zhe Chen , Jing Zhang , Dacheng Tao