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Due to the scarcity and unpredictable nature of defect samples, industrial anomaly detection (IAD) predominantly employs unsupervised learning. However, all unsupervised IAD methods face a common challenge: the inherent bias in normal…

Computer Vision and Pattern Recognition · Computer Science 2024-12-12 Xin Chen , Liujuan Cao , Shengchuan Zhang , Xiewu Zheng , Yan Zhang

Anomaly detection has a wide range of applications and is especially important in industrial quality inspection. Currently, many top-performing anomaly-detection models rely on feature-embedding methods. However, these methods do not…

Computer Vision and Pattern Recognition · Computer Science 2023-07-07 Shiqi Deng , Zhiyu Sun , Ruiyan Zhuang , Jun Gong

In unsupervised learning, there is no apparent straightforward cost function that can capture the significant factors of variations and similarities. Since natural systems have smooth dynamics, an opportunity is lost if an unsupervised…

Machine Learning · Computer Science 2020-01-06 Nairouz Mrabah , Naimul Mefraz Khan , Riadh Ksantini , Zied Lachiri

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 in images plays a significant role for many applications across all industries, such as disease diagnosis in healthcare or quality assurance in manufacturing. Manual inspection of images, when extended over a monotonously…

Computer Vision and Pattern Recognition · Computer Science 2021-07-21 Vincent Wilmet , Sauraj Verma , Tabea Redl , Håkon Sandaker , Zhenning Li

The volume of remote sensing data is experiencing rapid growth, primarily due to the plethora of space and air platforms equipped with an array of sensors. Due to limited hardware and battery constraints the data is transmitted back to…

Image and Video Processing · Electrical Eng. & Systems 2024-04-18 Alessandro Giuliano , S. Andrew Gadsden , Waleed Hilal , John Yawney

Automated anomaly detection is essential for managing information and communications technology (ICT) systems to maintain reliable services with minimum burden on operators. For detecting varying and continually emerging anomalies as…

Machine Learning · Statistics 2018-12-19 Yasuhiro Ikeda , Keisuke Ishibashi , Yuusuke Nakano , Keishiro Watanabe , Ryoichi Kawahara

With the mass construction of Gen III nuclear reactors, it is a popular trend to use deep learning (DL) techniques for fast and effective diagnosis of possible accidents. To overcome the common problems of previous work in diagnosing…

Signal Processing · Electrical Eng. & Systems 2022-09-26 Chengyuan Li , Zhifang Qiu , Zhangrui Yan , Meifu Li

Recently Autoencoder(AE) based models are widely used in the field of anomaly detection. A model trained with normal data generates a larger restoration error for abnormal data. Whether or not abnormal data is determined by observing the…

Machine Learning · Computer Science 2021-07-20 JoonSung Lee , YeongHyeon Park

Unsupervised anomaly detection (AD) aims to train robust detection models using only normal samples, while can generalize well to unseen anomalies. Recent research focuses on a unified unsupervised AD setting in which only one model is…

Computer Vision and Pattern Recognition · Computer Science 2024-09-11 Hui-Yue Yang , Hui Chen , Lihao Liu , Zijia Lin , Kai Chen , Liejun Wang , Jungong Han , Guiguang Ding

Prototype-based reconstruction methods for unsupervised anomaly detection utilize a limited set of learnable prototypes which only aggregates insufficient normal information, resulting in undesirable reconstruction. However, increasing the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Ziqing Zhou , Yurui Pan , Lidong Wang , Wenbing Zhu , Mingmin Chi , Dong Wu , Bo Peng

Integrating deep learning techniques into the video coding framework gains significant improvement compared to the standard compression techniques, especially applying super-resolution (up-sampling) to down-sampling based video coding as…

Image and Video Processing · Electrical Eng. & Systems 2021-01-19 Man M. Ho , Jinjia Zhou , Gang He

Image compression has been investigated as a fundamental research topic for many decades. Recently, deep learning has achieved great success in many computer vision tasks, and is gradually being used in image compression. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2018-04-26 Zhengxue Cheng , Heming Sun , Masaru Takeuchi , Jiro Katto

Video autoencoders compress videos into compact latent representations for efficient reconstruction, playing a vital role in enhancing the quality and efficiency of video generation. However, existing video autoencoders often entangle…

Computer Vision and Pattern Recognition · Computer Science 2025-12-15 Cuifeng Shen , Lumin Xu , Xingguo Zhu , Gengdai Liu

Deep learning (DL) algorithms can be used to automate paranasal anomaly detection from Magnetic Resonance Imaging (MRI). However, previous works relied on supervised learning techniques to distinguish between normal and abnormal samples.…

There have been significant advancements in anomaly detection in an unsupervised manner, where only normal images are available for training. Several recent methods aim to detect anomalies based on a memory, comparing or reconstructing the…

Computer Vision and Pattern Recognition · Computer Science 2024-07-25 Joo Chan Lee , Taejune Kim , Eunbyung Park , Simon S. Woo , Jong Hwan Ko

Multi-modal industrial anomaly detection typically relies on separate models for each product category, fundamentally limiting practical scalability. When shifting to a unified paradigm that handles diverse classes simultaneously, detection…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Yangchen Wu , Huiqiang Xie

Wind turbine reliability is critical to the growing renewable energy sector, where early fault detection significantly reduces downtime and maintenance costs. This paper introduces a novel ensemble-based deep learning framework for…

Machine Learning · Computer Science 2025-10-20 Rekha R Nair , Tina Babu , Alavikunhu Panthakkan , Balamurugan Balusamy , Wathiq Mansoor

Due to the limited availability of anomalous samples for training, video anomaly detection is commonly viewed as a one-class classification problem. Many prevalent methods investigate the reconstruction difference produced by AutoEncoders…

Computer Vision and Pattern Recognition · Computer Science 2023-03-10 Xiangyu Huang , Caidan Zhao , Chenxing Gao , Lvdong Chen , Zhiqiang Wu

Anomalies (or outliers) are prevalent in real-world empirical observations and potentially mask important underlying structures. Accurate identification of anomalous samples is crucial for the success of downstream data analysis tasks. To…

Machine Learning · Computer Science 2022-08-25 Ofir Lindenbaum , Yariv Aizenbud , Yuval Kluger
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