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Automated detection of abnormalities in data has been studied in research area in recent years because of its diverse applications in practice including video surveillance, industrial damage detection and network intrusion detection.…

Computer Vision and Pattern Recognition · Computer Science 2017-08-18 Hung Vu , Dinh Phung , Tu Dinh Nguyen , Anthony Trevors , Svetha Venkatesh

Time series anomaly detection plays a critical role in automated monitoring systems. Most previous deep learning efforts related to time series anomaly detection were based on recurrent neural networks (RNN). In this paper, we propose a…

Machine Learning · Computer Science 2019-06-03 Tailai Wen , Roy Keyes

Sound events often occur in unstructured environments where they exhibit wide variations in their frequency content and temporal structure. Convolutional neural networks (CNN) are able to extract higher level features that are invariant to…

Machine Learning · Computer Science 2017-05-31 Emre Çakır , Giambattista Parascandolo , Toni Heittola , Heikki Huttunen , Tuomas Virtanen

Most models for weakly supervised video anomaly detection (WS-VAD) rely on multiple instance learning, aiming to distinguish normal and abnormal snippets without specifying the type of anomaly. However, the ambiguous nature of anomaly…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Chenchen Tao , Xiaohao Peng , Chong Wang , Jiafei Wu , Puning Zhao , Jun Wang , Jiangbo Qian

Visual defect assessment is a form of anomaly detection. This is very relevant in finding faults such as cracks and markings in various surface inspection tasks like pavement and automotive parts. The task involves detection of…

Computer Vision and Pattern Recognition · Computer Science 2019-05-31 Manpreet Singh Minhas , John Zelek

Convolutional Neural Network (CNN) techniques have proven to be very useful in image-based anomaly detection applications. CNN can be used as deep features extractor where other anomaly detection techniques are applied on these features.…

Machine Learning · Computer Science 2022-08-15 Sulaiman Aburakhia , Tareq Tayeh , Ryan Myers , Abdallah Shami

Video Anomaly Detection(VAD) has been traditionally tackled in two main methodologies: the reconstruction-based approach and the prediction-based one. As the reconstruction-based methods learn to generalize the input image, the model merely…

Computer Vision and Pattern Recognition · Computer Science 2022-06-20 Joo-Yeon Lee , Woo-Jeoung Nam , Seong-Whan Lee

Accident detection using Closed Circuit Television (CCTV) footage is one of the most imperative features for enhancing transport safety and efficient traffic control. To this end, this research addresses the issues of supervised monitoring…

Computer Vision and Pattern Recognition · Computer Science 2025-06-23 Zhenghao Xi , Xiang Liu , Yaqi Liu , Yitong Cai , Yangyu Zheng

In this paper, we introduce the concept of learning latent super-events from activity videos, and present how it benefits activity detection in continuous videos. We define a super-event as a set of multiple events occurring together in…

Computer Vision and Pattern Recognition · Computer Science 2018-03-30 AJ Piergiovanni , Michael S. Ryoo

Automating the detection of anomalous events within long video sequences is challenging due to the ambiguity of how such events are defined. We approach the problem by learning generative models that can identify anomalies in videos using…

Computer Vision and Pattern Recognition · Computer Science 2016-12-16 Jefferson Ryan Medel , Andreas Savakis

Appearance features have been widely used in video anomaly detection even though they contain complex entangled factors. We propose a new method to model the normal patterns of human movements in surveillance video for anomaly detection…

Computer Vision and Pattern Recognition · Computer Science 2019-04-19 Romero Morais , Vuong Le , Truyen Tran , Budhaditya Saha , Moussa Mansour , Svetha Venkatesh

The aim of this work is to detect and automatically generate high-level explanations of anomalous events in video. Understanding the cause of an anomalous event is crucial as the required response is dependant on its nature and severity.…

Computer Vision and Pattern Recognition · Computer Science 2021-12-13 Stanislaw Szymanowicz , James Charles , Roberto Cipolla

Video anomaly detection aims to identify abnormal events that occurred in videos. Since anomalous events are relatively rare, it is not feasible to collect a balanced dataset and train a binary classifier to solve the task. Thus, most…

Computer Vision and Pattern Recognition · Computer Science 2022-11-24 Guangyu Sun , Zhang Liu , Lianggong Wen , Jing Shi , Chenliang Xu

Video anomaly detection aims to find the events in a video that do not conform to the expected behavior. The prevalent methods mainly detect anomalies by snippet reconstruction or future frame prediction error. However, the error is highly…

Computer Vision and Pattern Recognition · Computer Science 2022-09-08 Congqi Cao , Yue Lu , Yanning Zhang

Abnormal event detection is one of the important objectives in research and practical applications of video surveillance. However, there are still three challenging problems for most anomaly detection systems in practical setting: limited…

Computer Vision and Pattern Recognition · Computer Science 2018-10-02 Hung Vu , Tu Dinh Nguyen , Dinh Phung

This paper proposes an adaptive auxiliary task learning based approach for object counting problems. Unlike existing auxiliary task learning based methods, we develop an attention-enhanced adaptively shared backbone network to enable both…

Computer Vision and Pattern Recognition · Computer Science 2022-03-09 Yanda Meng , Joshua Bridge , Meng Wei , Yitian Zhao , Yihong Qiao , Xiaoyun Yang , Xiaowei Huang , Yalin Zheng

With rapidly increasing deployment of surveillance cameras, the reliable methods for automatically analyzing the surveillance video and recognizing special events are demanded by different practical applications. This paper proposes a novel…

Computer Vision and Pattern Recognition · Computer Science 2018-10-29 Michael Ying Yang , Wentong Liao , Chun Yang , Yanpeng Cao , Bodo Rosenhahn

Anomaly detection usually assumes that abnormality is an intrinsic property of an observation. A defect is a defect, and a rare object is rare, regardless of where it appears. Many real-world anomalies do not work this way. A runner on a…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Shashank Mishra , Didier Stricker , Jason Rambach

Anomaly detection in supercomputers is a very difficult problem due to the big scale of the systems and the high number of components. The current state of the art for automated anomaly detection employs Machine Learning methods or…

Machine Learning · Computer Science 2020-07-30 Andrea Borghesi , Andrea Bartolini , Michele Lombardi , Michela Milano , Luca Benini

Anomaly detection consists in identifying, within a dataset, those samples that significantly differ from the majority of the data, representing the normal class. It has many practical applications, e.g. ranging from defective product…

Computer Vision and Pattern Recognition · Computer Science 2020-11-13 Pankaj Mishra , Claudio Piciarelli , Gian Luca Foresti