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Anomaly detection is a long-standing challenge in manufacturing systems. Traditionally, anomaly detection has relied on human inspectors. However, 3D point clouds have gained attention due to their robustness to environmental factors and…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Jiayu Liu , Shancong Mou , Nathan Gaw , Yinan Wang

Anomaly detection is an important function in IoT applications for finding outliers caused by abnormal events. Anomaly detection sometimes comes with high-frequency data sampling which should be carried out at Edge devices rather than…

Machine Learning · Computer Science 2024-07-17 Hideya Ochiai , Riku Nishihata , Eisuke Tomiyama , Yuwei Sun , Hiroshi Esaki

Anomaly detection in videos is challenging due to the complexity, noise, and diverse nature of activities such as violence, shoplifting, and vandalism. While deep learning (DL) has shown excellent performance in this area, existing…

Computer Vision and Pattern Recognition · Computer Science 2024-08-05 Sabah Abdulazeez Jebur , Khalid A. Hussein , Haider Kadhim Hoomod , Laith Alzubaidi , Ahmed Ali Saihood , YuanTong Gu

The detection of out-of-distribution data points is a common task in particle physics. It is used for monitoring complex particle detectors or for identifying rare and unexpected events that may be indicative of new phenomena or physics…

Data Analysis, Statistics and Probability · Physics 2024-02-07 Vasilis Belis , Patrick Odagiu , Thea Klæboe Årrestad

Previous industrial anomaly detection methods often struggle to handle the extensive diversity in training sets, particularly when they contain stylistically diverse and feature-rich samples, which we categorize as feature-rich anomaly…

Computer Vision and Pattern Recognition · Computer Science 2025-06-16 Fengjie Wang , Chengming Liu , Lei Shi , Pang Haibo

We review recent machine-learning (ML) approaches for point defects in non-metallic materials, with an emphasis on defect formation energies. Existing studies largely fall into two categories: direct ML models that predict defect energetics…

Materials Science · Physics 2026-05-19 Yu Kumagai , Shin Kiyohara

Detecting anomalies within point clouds is crucial for various industrial applications, but traditional unsupervised methods face challenges due to data acquisition costs, early-stage production constraints, and limited generalization…

Computer Vision and Pattern Recognition · Computer Science 2024-09-23 Yuqi Cheng , Yunkang Cao , Guoyang Xie , Zhichao Lu , Weiming Shen

Anomalies in images occur in various scales from a small hole on a carpet to a large stain. However, anomaly detection based on sparse coding, one of the widely used anomaly detection methods, has an issue in dealing with anomalies that are…

Computer Vision and Pattern Recognition · Computer Science 2021-04-12 Ryuji Imamura , Kohei Azuma , Atsushi Hanamoto , Atsunori Kanemura

Hacking and false data injection from adversaries can threaten power grids' everyday operations and cause significant economic loss. Anomaly detection in power grids aims to detect and discriminate anomalies caused by cyber attacks against…

Machine Learning · Computer Science 2023-03-14 Xijuan Sun , Di Wu , Arnaud Zinflou , Benoit Boulet

Various approaches in the field of physical layer security involve anomaly detection, such as physical layer authentication, sensing attacks, and anti-tampering solutions. Depending on the context in which these approaches are applied,…

Information Theory · Computer Science 2025-06-13 Stefan Roth , Aydin Sezgin

Three-dimensional object recognition has recently achieved great progress thanks to the development of effective point cloud-based learning frameworks, such as PointNet and its extensions. However, existing methods rely heavily on fully…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Weikai Chen , Xiaoguang Han , Guanbin Li , Chao Chen , Jun Xing , Yajie Zhao , Hao Li

Anomaly detection aims to separate anomalies from normal samples, and the pretrained network is promising for anomaly detection. However, adapting the pretrained features would be confronted with the risk of pattern collapse when finetuning…

Computer Vision and Pattern Recognition · Computer Science 2022-04-26 Xingtai Gui , Di Wu , Yang Chang , Shicai Fan

In a variety of applications, one desires to detect groups of anomalous data samples, with a group potentially manifesting its atypicality (relative to a reference model) on a low-dimensional subset of the full measured set of features.…

Networking and Internet Architecture · Computer Science 2015-11-04 Zhicong Qiu , David J. Miller , George Kesidis

Identification of anomalous events within system logs constitutes a pivotal element within the frame- work of cybersecurity defense strategies. However, this process faces numerous challenges, including the management of substantial data…

Cryptography and Security · Computer Science 2025-10-21 Zeng Zhang , Wenjie Yin , Xiaoqi Li

Industrial surface defect detection often suffers from limited defect samples, severe long-tailed distributions, and difficulties in accurately localizing subtle defects under complex backgrounds. To address these challenges, this paper…

Artificial Intelligence · Computer Science 2026-04-22 Shuo Feng , Runlin Zhou , Yuyang Li , Guangcan Liu

This paper presents a new approach, based on polynomial optimization and the method of moments, to the problem of anomaly detection. The proposed technique only requires information about the statistical moments of the normal-state…

Optimization and Control · Mathematics 2015-06-02 Jose A. Lopez , Octavia Camps , Mario Sznaier

Vision-based industrial inspection (VII) aims to locate defects quickly and accurately. Supervised learning under a close-set setting and industrial anomaly detection, as two common paradigms in VII, face different problems in practical…

Computer Vision and Pattern Recognition · Computer Science 2024-08-01 Zilong Zhang , Chang Niu , Zhibin Zhao , Xingwu Zhang , Xuefeng Chen

Visual anomaly detection in real-world industrial settings faces two major limitations. First, most existing methods are trained on purely normal data or on unlabeled datasets assumed to be predominantly normal, presuming the absence of…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Anindya Sundar Das , Monowar Bhuyan

Over the past few years, there has been a significant improvement in the domain of few-shot learning. This learning paradigm has shown promising results for the challenging problem of anomaly detection, where the general task is to deal…

Computer Vision and Pattern Recognition · Computer Science 2022-11-24 Soumyajit Karmakar , Abeer Banerjee , Prashant Sadashiv Gidde , Sumeet Saurav , Sanjay Singh

Anomaly detection in surveillance videos is a challenging task due to the diversity of anomalous video content and duration. In this paper, we consider video anomaly detection as a regression problem with respect to anomaly scores of video…

Computer Vision and Pattern Recognition · Computer Science 2021-04-16 Boyang Wan , Yuming Fang , Xue Xia , Jiajie Mei