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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

Semiconductor manufacturing is a complex, multistage process. Automated visual inspection of Scanning Electron Microscope (SEM) images is indispensable for minimizing equipment downtime and containing costs. Most previous research considers…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Manuel Barusco , Francesco Borsatti , Youssef Ben Khalifa , Davide Dalle Pezze , Gian Antonio Susto

Given a multivariate big time series, can we detect anomalies as soon as they occur? Many existing works detect anomalies by learning how much a time series deviates away from what it should be in the reconstruction framework. However, most…

Machine Learning · Computer Science 2022-04-19 Quan Ding , Shenghua Liu , Bin Zhou , Huawei Shen , Xueqi Cheng

We propose a text-guided variational image generation method to address the challenge of getting clean data for anomaly detection in industrial manufacturing. Our method utilizes text information about the target object, learned from…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Mingyu Lee , Jongwon Choi

The micro-structure of most of the engineering alloys contains some inclusions and precipitates, which may affect their properties, therefore it is crucial to characterize them. In this work we focus on the development of a state-of-the-art…

Signal Processing · Electrical Eng. & Systems 2020-03-10 Matan Rusanovsky , Gal Oren , Sigalit Ifergane , Ofer Beeri

One-class anomaly detection is challenging. A representation that clearly distinguishes anomalies from normal data is ideal, but arriving at this representation is difficult since only normal data is available at training time. We examine…

Machine Learning · Computer Science 2021-04-22 Kimberly T. Mai , Toby Davies , Lewis D. Griffin

In critical applications of anomaly detection including computer security and fraud prevention, the anomaly detector must be configurable by the analyst to minimize the effort on false positives. One important way to configure the anomaly…

Machine Learning · Computer Science 2018-09-19 Shubhomoy Das , Md Rakibul Islam , Nitthilan Kannappan Jayakodi , Janardhan Rao Doppa

Vehicle instance retrieval often requires one to recognize the fine-grained visual differences between vehicles. Besides the holistic appearance of vehicles which is easily affected by the viewpoint variation and distortion, vehicle parts…

Computer Vision and Pattern Recognition · Computer Science 2020-09-29 Xinyu Zhang , Rufeng Zhang , Jiewei Cao , Dong Gong , Mingyu You , Chunhua Shen

Anomalies and outliers are common in real-world data, and they can arise from many sources, such as sensor faults. Accordingly, anomaly detection is important both for analyzing the anomalies themselves and for cleaning the data for further…

Machine Learning · Statistics 2018-11-13 Haitao Liu , Randy C. Paffenroth , Jian Zou , Chong Zhou

Anomaly detection is a core capability for robotic perception and industrial inspection, yet most existing benchmarks are collected under controlled conditions with fixed viewpoints and stable illumination, failing to reflect real…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Kaichen Zhou , Xinhai Chang , Taewhan Kim , Jiadong Zhang , Yang Cao , Chufei Peng , Fangneng Zhan , Hao Zhao , Hao Dong , Kai Ming Ting , Ye Zhu

In this study, a new Anomaly Detection (AD) approach for industrial and medical images is proposed. This method leverages the theoretical strengths of unsupervised learning and the data availability of both normal and abnormal classes.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-24 Arnaud Bougaham , Valentin Delchevalerie , Mohammed El Adoui , Benoît Frénay

In industrial vision, the anomaly detection problem can be addressed with an autoencoder trained to map an arbitrary image, i.e. with or without any defect, to a clean image, i.e. without any defect. In this approach, anomaly detection…

Image and Video Processing · Electrical Eng. & Systems 2020-11-05 Anne-Sophie Collin , Christophe De Vleeschouwer

Anomaly detection is concerned with identifying data patterns that deviate remarkably from the expected behaviour. This is an important research problem, due to its broad set of application domains, from data analysis to e-health,…

Machine Learning · Computer Science 2021-08-23 L. Erhan , M. Ndubuaku , M. Di Mauro , W. Song , M. Chen , G. Fortino , O. Bagdasar , A. Liotta

In recent years, Artificial Neural Networks (ANNs) have been introduced in Structural Health Monitoring (SHM) systems. A semi-supervised method with a data-driven approach allows the ANN training on data acquired from an undamaged…

Machine Learning · Computer Science 2023-08-15 Andrea Pollastro , Giusiana Testa , Antonio Bilotta , Roberto Prevete

Anomaly detection is critical for the secure and reliable operation of industrial control systems. As our reliance on such complex cyber-physical systems grows, it becomes paramount to have automated methods for detecting anomalies,…

Machine Learning · Computer Science 2024-05-10 Mayra Macas , Chunming Wu , Walter Fuertes

Obtaining models that capture imaging markers relevant for disease progression and treatment monitoring is challenging. Models are typically based on large amounts of data with annotated examples of known markers aiming at automating…

Computer Vision and Pattern Recognition · Computer Science 2017-03-20 Thomas Schlegl , Philipp Seeböck , Sebastian M. Waldstein , Ursula Schmidt-Erfurth , Georg Langs

Anomaly detection in imbalanced datasets is a frequent and crucial problem, especially in the medical domain where retrieving and labeling irregularities is often expensive. By combining the generative stability of a $\beta$-variational…

Machine Learning · Computer Science 2023-10-30 Fiete Lüer , Tobias Weber , Maxim Dolgich , Christian Böhm

Anomaly driving detection is an important problem in advanced driver assistance systems (ADAS). It is important to identify potential hazard scenarios as early as possible to avoid potential accidents. This study proposes an unsupervised…

Computer Vision and Pattern Recognition · Computer Science 2022-03-17 Yuning Qiu , Teruhisa Misu , Carlos Busso

In many anomaly detection tasks, where anomalous data rarely appear and are difficult to collect, training using only normal data is important. Although it is possible to manually create anomalous data using prior knowledge, they may be…

Machine Learning · Computer Science 2022-05-10 Hironori Murase , Kenji Fukumizu

Existing anomaly detection paradigms overwhelmingly focus on training detection models using exclusively normal data or unlabeled data (mostly normal samples). One notorious issue with these approaches is that they are weak in…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Guansong Pang , Choubo Ding , Chunhua Shen , Anton van den Hengel