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RGB-based surface anomaly detection methods have advanced significantly. However, certain surface anomalies remain practically invisible in RGB alone, necessitating the incorporation of 3D information. Existing approaches that employ…

计算机视觉与模式识别 · 计算机科学 2023-11-03 Vitjan Zavrtanik , Matej Kristan , Danijel Skočaj

Anomaly detection in time series data is crucial across various domains. The scarcity of labeled data for such tasks has increased the attention towards unsupervised learning methods. These approaches, often relying solely on reconstruction…

机器学习 · 计算机科学 2024-05-14 Ramin Ghorbani , Marcel J. T. Reinders , David M. J. Tax

Deep neural networks show great potential for automating various visual quality inspection tasks in manufacturing. However, their applicability is limited in more volatile scenarios, such as remanufacturing, where the inspected products and…

计算机视觉与模式识别 · 计算机科学 2026-02-12 Johannes C. Bauer , Paul Geng , Stephan Trattnig , Petr Dokládal , Rüdiger Daub

In this paper, we explore a novel approach to 3D anomaly detection (AD) that goes beyond merely identifying anomalies based on structural characteristics. Our primary perspective is that most anomalies arise from unpredictable defective…

计算机视觉与模式识别 · 计算机科学 2025-05-16 Hanzhe Liang , Aoran Wang , Jie Zhou , Xin Jin , Can Gao , Jinbao Wang

In unsupervised anomaly detection (UAD) research, while state-of-the-art models have reached a saturation point with extensive studies on public benchmark datasets, they adopt large-scale tailor-made neural networks (NN) for detection…

计算机视觉与模式识别 · 计算机科学 2024-07-08 YeongHyeon Park , Sungho Kang , Myung Jin Kim , Hyeong Seok Kim , Juneho Yi

Federated learning (FL) has broadened the horizon for multivariate time series anomaly detection (MTSAD). However, benchmarking such anomaly detection methods within FL paradigm poses data-centric challenges. The existing datasets do not…

机器学习 · 计算机科学 2026-05-28 Khayyam Nosrati , Martin Uray , Saverio Messineo , Olaf Sassnick , Stefan Huber

Deep anomaly detection (AD) aims to provide robust and efficient classifiers for one-class and unbalanced settings. However current AD models still struggle on edge-case normal samples and are often unable to keep high performance over…

计算机视觉与模式识别 · 计算机科学 2023-03-10 Loic Jezequel , Ngoc-Son Vu , Jean Beaudet , Aymeric Histace

Anomaly detection (AD) is often focused on detecting anomaly areas for industrial quality inspection and medical lesion examination. However, due to the specific scenario targets, the data scale for AD is relatively small, and evaluation…

计算机视觉与模式识别 · 计算机科学 2024-04-17 Jiangning Zhang , Chengjie Wang , Xiangtai Li , Guanzhong Tian , Zhucun Xue , Yong Liu , Guansong Pang , Dacheng Tao

Current state-of-the-art multi-class unsupervised anomaly detection (MUAD) methods rely on training encoder-decoder models to reconstruct anomaly-free features. We first show these approaches have an inherent fidelity-stability dilemma in…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Xingwu Zhang , Guanxuan Li , Paul Henderson , Gerardo Aragon-Camarasa , Zijun Long

Detecting anomalies using deep learning has become a major challenge over the last years, and is becoming increasingly promising in several fields. The introduction of self-supervised learning has greatly helped many methods including…

计算机视觉与模式识别 · 计算机科学 2022-03-18 Loic Jezequel , Ngoc-Son Vu , Jean Beaudet , Aymeric Histace

Unsupervised Anomaly Detection (UAD) with incremental training is crucial in industrial manufacturing, as unpredictable defects make obtaining sufficient labeled data infeasible. However, continual learning methods primarily rely on…

计算机视觉与模式识别 · 计算机科学 2024-01-03 Jiaqi Liu , Kai Wu , Qiang Nie , Ying Chen , Bin-Bin Gao , Yong Liu , Jinbao Wang , Chengjie Wang , Feng Zheng

The rapid expansion of data from diverse sources has made anomaly detection (AD) increasingly essential for identifying unexpected observations that may signal system failures, security breaches, or fraud. As datasets become more complex…

机器学习 · 计算机科学 2025-03-18 Haoqi Huang , Ping Wang , Jianhua Pei , Jiacheng Wang , Shahen Alexanian , Dusit Niyato

Anomaly detection has garnered extensive applications in real industrial manufacturing due to its remarkable effectiveness and efficiency. However, previous generative-based models have been limited by suboptimal reconstruction quality,…

计算机视觉与模式识别 · 计算机科学 2025-05-20 Hui Zhang , Zheng Wang , Dan Zeng , Zuxuan Wu , Yu-Gang Jiang

A classification technique incorporating a novel feature derivation method is proposed for predicting failure of a system or device with multivariate time series sensor data. We treat the multivariate time series sensor data as images for…

机器学习 · 计算机科学 2021-09-22 Lanfa Frank Wang , Danjue Li

One of the most challenging problems in the field of intrusion detection is anomaly detection for discrete event logs. While most earlier work focused on applying unsupervised learning upon engineered features, most recent work has started…

机器学习 · 计算机科学 2021-06-04 Lun-Pin Yuan , Peng Liu , Sencun Zhu

The paper explores the industrial multimodal Anomaly Detection (AD) task, which exploits point clouds and RGB images to localize anomalies. We introduce a novel light and fast framework that learns to map features from one modality to the…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Alex Costanzino , Pierluigi Zama Ramirez , Giuseppe Lisanti , Luigi Di Stefano

Multivariate time series anomaly detection (MTSAD) aims to accurately identify and localize complex abnormal patterns in the large-scale industrial control systems. While existing approaches excel in recognizing the distinct patterns under…

机器学习 · 计算机科学 2025-12-17 Xuechun Liu , Heli Sun , Xuecheng Wu , Ruichen Cao , Yunyun Shi , Dingkang Yang , Haoran Li

Modern software systems have become increasingly complex, which makes them difficult to test and validate. Detecting software partial anomalies in complex systems at runtime can assist with handling unintended software behaviors, avoiding…

软件工程 · 计算机科学 2022-04-27 Shiyi Kong , Jun Ai , Minyan Lu , Shuguang Wang , W. Eric Wong

As Deep Learning (DL) systems are widely deployed for mission-critical applications, debugging such systems becomes essential. Most existing works identify and repair suspicious neurons on the trained Deep Neural Network (DNN), which,…

软件工程 · 计算机科学 2022-05-05 Jialun Cao , Meiziniu Li , Xiao Chen , Ming Wen , Yongqiang Tian , Bo Wu , Shing-Chi Cheung

Deep unsupervised approaches are gathering increased attention for applications such as pathology detection and segmentation in medical images since they promise to alleviate the need for large labeled datasets and are more generalizable…

计算机视觉与模式识别 · 计算机科学 2023-08-01 Ioannis Lagogiannis , Felix Meissen , Georgios Kaissis , Daniel Rueckert