English
Related papers

Related papers: Combining GANs and AutoEncoders for Efficient Anom…

200 papers

Robust anomaly detection is a requirement for monitoring complex modern systems with applications such as cyber-security, fraud prevention, and maintenance. These systems generate multiple correlated time series that are highly seasonal and…

Machine Learning · Computer Science 2019-11-19 Farzaneh Khoshnevisan , Zhewen Fan

Robustness against noisy imaging is crucial for practical image anomaly detection systems. This study introduces a Robust Anomaly Detection (RAD) dataset with free views, uneven illuminations, and blurry collections to systematically…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Yuqi Cheng , Yunkang Cao , Rui Chen , Weiming Shen

Quantum computing may offer new approaches for advancing machine learning, including in complex tasks such as anomaly detection in network traffic. In this paper, we introduce a quantum generative adversarial network (QGAN) architecture for…

Machine Learning · Computer Science 2025-05-20 Wajdi Hammami , Soumaya Cherkaoui , Shengrui Wang

The rapid advancement of machine learning technologies raises questions about the security of machine learning models, with respect to both training-time (poisoning) and test-time (evasion, impersonation, and inversion) attacks. Models…

Computer Vision and Pattern Recognition · Computer Science 2025-03-21 Xinheng Xie , Kureha Yamaguchi , Margaux Leblanc , Simon Malzard , Varun Chhabra , Victoria Nockles , Yue Wu

Semi-supervised methods of anomaly detection have seen substantial advancement in recent years. Of particular interest are applications of such methods to diverse, real-world anomaly detection problems where anomalous variations can vary…

Computer Vision and Pattern Recognition · Computer Science 2021-04-29 Jack W. Barker , Toby P. Breckon

Supervised classification methods have been widely utilized for the quality assurance of the advanced manufacturing process, such as additive manufacturing (AM) for anomaly (defects) detection. However, since abnormal states (with defects)…

Machine Learning · Computer Science 2022-11-29 Jihoon Chung , Bo Shen , Zhenyu , Kong

Conditional Generative Adversarial Networks (cGANs) have been used in many image processing tasks. However, they still have serious problems maintaining the balance between conditioning the output on the input and creating the output with…

Computer Vision and Pattern Recognition · Computer Science 2021-09-14 Mohammadreza Naderi , Zahra Nabizadeh , Nader Karimi , Shahram Shirani , Shadrokh Samavi

Anomaly detection is the process of finding data points that deviate from a baseline. In a real-life setting, anomalies are usually unknown or extremely rare. Moreover, the detection must be accomplished in a timely manner or the risk of…

Machine Learning · Computer Science 2019-04-26 Mariem Ben Fadhel , Kofi Nyarko

Many anomaly detection approaches, especially deep learning methods, have been recently developed to identify abnormal image morphology by only employing normal images during training. Unfortunately, many prior anomaly detection methods…

Graph Anomaly Detection (GAD) aims to identify uncommon, deviated, or suspicious objects within graph-structured data. Existing methods generally focus on a single graph object type (node, edge, graph, etc.) and often overlook the inherent…

Machine Learning · Computer Science 2024-11-12 Yiqing Lin , Jianheng Tang , Chenyi Zi , H. Vicky Zhao , Yuan Yao , Jia Li

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

Generative Adversarial Networks (GANs) have facilitated a new direction to tackle the image-to-image transformation problem. Different GANs use generator and discriminator networks with different losses in the objective function. Still…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Kancharagunta Kishan Babu , Shiv Ram Dubey

Generating images according to natural language descriptions is a challenging task. Prior research has mainly focused to enhance the quality of generation by investigating the use of spatial attention and/or textual attention thereby…

Computer Vision and Pattern Recognition · Computer Science 2022-01-17 Henning Schulze , Dogucan Yaman , Alexander Waibel

We introduce BSD-GAN, a novel multi-branch and scale-disentangled training method which enables unconditional Generative Adversarial Networks (GANs) to learn image representations at multiple scales, benefiting a wide range of generation…

Computer Vision and Pattern Recognition · Computer Science 2020-08-05 Zili Yi , Zhiqin Chen , Hao Cai , Wendong Mao , Minglun Gong , Hao Zhang

Generative Adversarial Networks (GANs) are proficient at generating synthetic data but continue to suffer from mode collapse, where the generator produces a narrow range of outputs that fool the discriminator but fail to capture the full…

Machine Learning · Computer Science 2025-11-03 Mahsa Valizadeh , Rui Tuo , James Caverlee

Unsupervised anomaly detection (UAD) has been widely implemented in industrial and medical applications, which reduces the cost of manual annotation and improves efficiency in disease diagnosis. Recently, deep auto-encoder with its variants…

Computer Vision and Pattern Recognition · Computer Science 2023-03-31 Mingqing Wang , Jiawei Li , Zhenyang Li , Chengxiao Luo , Bin Chen , Shu-Tao Xia , Zhi Wang

In ill-posed imaging inverse problems, there can exist many hypotheses that fit both the observed measurements and prior knowledge of the true image. Rather than returning just one hypothesis of that image, posterior samplers aim to explore…

Image and Video Processing · Electrical Eng. & Systems 2024-11-04 Matthew C. Bendel , Rizwan Ahmad , Philip Schniter

With the increased accuracy of modern computer vision technology, many access control systems are equipped with face recognition functions for faster identification. In order to maintain high recognition accuracy, it is necessary to keep…

Computer Vision and Pattern Recognition · Computer Science 2023-04-25 Tsung-Han Kuo , Zhenge Jia , Tei-Wei Kuo , Jingtong Hu

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

The task of image anomaly detection (IAD) aims to identify deviations from normality in image data. These anomalies are patterns that deviate significantly from what the IAD model has learned from the data during training. However, in…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Jihun Yi , Dahuin Jung , Sungroh Yoon