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Anomaly detection is critical in industrial manufacturing for ensuring product quality and improving efficiency in automated processes. The scarcity of anomalous samples limits traditional detection methods, making anomaly generation…

计算机视觉与模式识别 · 计算机科学 2025-02-18 Xuan Tong , Yang Chang , Qing Zhao , Jiawen Yu , Boyang Wang , Junxiong Lin , Yuxuan Lin , Xinji Mai , Haoran Wang , Zeng Tao , Yan Wang , Wenqiang Zhang

The detection of the abnormal area from urban data is a significant research problem. However, to the best of our knowledge, previous methods designed on spatio-temporal anomalies are road-based or grid-based, which usually causes the data…

社会与信息网络 · 计算机科学 2020-07-16 Huaishao Luo , Chuishi Meng , Bowen Wu , Junbo Zhang , Tianrui Li , Yu Zheng

Unsupervised anomaly detection and localization, as of one the most practical and challenging problems in computer vision, has received great attention in recent years. From the time the MVTec AD dataset was proposed to the present, new…

计算机视觉与模式识别 · 计算机科学 2022-05-31 Ye Zheng , Xiang Wang , Yu Qi , Wei Li , Liwei Wu

To operate safely, autonomous vehicles (AVs) need to detect and handle unexpected objects or anomalies on the road. While significant research exists for anomaly detection and segmentation in 2D, research progress in 3D is underexplored.…

计算机视觉与模式识别 · 计算机科学 2025-05-06 Alexey Nekrasov , Malcolm Burdorf , Stewart Worrall , Bastian Leibe , Julie Stephany Berrio Perez

Unsupervised multivariate time series anomaly detection (UMTSAD) plays a critical role in various domains, including finance, networks, and sensor systems. In recent years, due to the outstanding performance of deep learning in general…

机器学习 · 计算机科学 2025-04-28 Tiange Huang , Yongjun Li

Unsupervised anomaly detection (UAD) alleviates large labeling efforts by training exclusively on unlabeled in-distribution data and detecting outliers as anomalies. Generally, the assumption prevails that large training datasets allow the…

计算机视觉与模式识别 · 计算机科学 2024-10-29 Felix Meissen , Johannes Getzner , Alexander Ziller , Özgün Turgut , Georgios Kaissis , Martin J. Menten , Daniel Rueckert

Anomaly detection (AD) plays a pivotal role in numerous web-based applications, including malware detection, anti-money laundering, device failure detection, and network fault analysis. Most methods, which rely on unsupervised learning, are…

机器学习 · 计算机科学 2024-02-07 Haihong Zhao , Chenyi Zi , Yang Liu , Chen Zhang , Yan Zhou , Jia Li

In this paper, we introduce a novel task termed unified anomaly detection and classification, which aims to simultaneously detect anomalous regions in images and identify their specific categories. Existing methods typically treat anomaly…

计算机视觉与模式识别 · 计算机科学 2026-02-04 Ximiao Zhang , Min Xu , Zheng Zhang , Junlin Hu , Xiuzhuang Zhou

Anomaly awareness is an essential capability for safety-critical applications such as autonomous driving. While recent progress of robotics and computer vision has enabled anomaly detection for image classification, anomaly detection on…

计算机视觉与模式识别 · 计算机科学 2021-11-30 Guan-Rong Lu , Yueh-Cheng Liu , Tung-I Chen , Hung-Ting Su , Tsung-Han Wu , Winston H. Hsu

Deep approaches to anomaly detection have recently shown promising results over shallow methods on large and complex datasets. Typically anomaly detection is treated as an unsupervised learning problem. In practice however, one may…

We introduce a powerful student-teacher framework for the challenging problem of unsupervised anomaly detection and pixel-precise anomaly segmentation in high-resolution images. Student networks are trained to regress the output of a…

计算机视觉与模式识别 · 计算机科学 2020-09-08 Paul Bergmann , Michael Fauser , David Sattlegger , Carsten Steger

Unsupervised anomaly detection aims to detect defective parts of a sample by having access, during training, to a set of normal, i.e. defect-free, data. It has many applications in fields, such as industrial inspection or medical imaging,…

图像与视频处理 · 电气工程与系统科学 2025-09-03 Robin Trombetta , Carole Lartizien

Although mainstream unsupervised anomaly detection (AD) (including image-level classification and pixel-level segmentation)algorithms perform well in academic datasets, their performance is limited in practical application due to the ideal…

计算机视觉与模式识别 · 计算机科学 2025-01-14 Chengjie Wang , Xi Jiang , Bin-Bin Gao , Zhenye Gan , Yong Liu , Feng Zheng , Lizhuang Ma

This paper presents a novel anomaly detection methodology termed Statistical Aggregated Anomaly Detection (SAAD). The SAAD approach integrates advanced statistical techniques with machine learning, and its efficacy is demonstrated through…

机器学习 · 计算机科学 2024-06-14 Dacian Goina , Eduard Hogea , George Maties

State-of-the-art lidar panoptic segmentation (LPS) methods follow bottom-up segmentation-centric fashion wherein they build upon semantic segmentation networks by utilizing clustering to obtain object instances. In this paper, we re-think…

计算机视觉与模式识别 · 计算机科学 2023-10-20 Abhinav Agarwalla , Xuhua Huang , Jason Ziglar , Francesco Ferroni , Laura Leal-Taixé , James Hays , Aljoša Ošep , Deva Ramanan

Continuous electrocardiogram (ECG) monitoring via wearable devices is vital for early cardiovascular disease detection. However, deploying deep learning models on resource-constrained microcontrollers faces reliability challenges,…

机器学习 · 计算机科学 2026-01-26 Mustafa Fuad Rifet Ibrahim , Maurice Meijer , Alexander Schlaefer , Peer Stelldinger

Conventional unsupervised anomaly detection (UAD) methods build separate models for each object category. Recent studies have proposed to train a unified model for multiple classes, namely model-unified UAD. However, such methods still…

计算机视觉与模式识别 · 计算机科学 2024-04-17 Jia Guo , Haonan Han , Shuai Lu , Weihang Zhang , Huiqi Li

We aim at constructing a high performance model for defect detection that detects unknown anomalous patterns of an image without anomalous data. To this end, we propose a two-stage framework for building anomaly detectors using normal…

计算机视觉与模式识别 · 计算机科学 2021-04-12 Chun-Liang Li , Kihyuk Sohn , Jinsung Yoon , Tomas Pfister

We investigate anomaly detection in an unsupervised framework and introduce Long Short Term Memory (LSTM) neural network based algorithms. In particular, given variable length data sequences, we first pass these sequences through our LSTM…

信号处理 · 电气工程与系统科学 2020-02-25 Tolga Ergen , Ali Hassan Mirza , Suleyman Serdar Kozat

This paper proposes LPC-AD, a fast and accurate multivariate time series (MTS) anomaly detection method. LPC-AD is motivated by the ever-increasing needs for fast and accurate MTS anomaly detection methods to support fast troubleshooting in…

机器学习 · 计算机科学 2022-05-18 Zhi Qi , Hong Xie , Ye Li , Jian Tan , FeiFei Li , John C. S. Lui