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We propose a novel approach to video anomaly detection: we treat feature vectors extracted from videos as realizations of a random variable with a fixed distribution and model this distribution with a neural network. This lets us estimate…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Jakub Micorek , Horst Possegger , Dominik Narnhofer , Horst Bischof , Mateusz Kozinski

Our objective is to detect anomalies in video while also automatically explaining the reason behind the detector's response. In a practical sense, explainability is crucial for this task as the required response to an anomaly depends on its…

Computer Vision and Pattern Recognition · Computer Science 2021-06-17 Stanislaw Szymanowicz , James Charles , Roberto Cipolla

Open Set Video Anomaly Detection (OpenVAD) aims to identify abnormal events from video data where both known anomalies and novel ones exist in testing. Unsupervised models learned solely from normal videos are applicable to any testing…

Computer Vision and Pattern Recognition · Computer Science 2022-08-24 Yuansheng Zhu , Wentao Bao , Qi Yu

Video Anomaly Detection (VAD) systems can autonomously monitor and identify disturbances, reducing the need for manual labor and associated costs. However, current VAD systems are often limited by their superficial semantic understanding of…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Jiaqi Tang , Hao Lu , Ruizheng Wu , Xiaogang Xu , Ke Ma , Cheng Fang , Bin Guo , Jiangbo Lu , Qifeng Chen , Ying-Cong Chen

In the domain of anomaly detection, methods often excel in either high-level semantic or low-level industrial benchmarks, rarely achieving cross-domain proficiency. Semantic anomalies are novelties that differ in meaning from the training…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Luc P. J. Sträter , Mohammadreza Salehi , Efstratios Gavves , Cees G. M. Snoek , Yuki M. Asano

Video anomaly detection is critical for public safety and security, yet remains highly challenging despite extensive research due to large variations in appearance, viewpoint, and scene dynamics. Among existing approaches, human pose-based…

Computer Vision and Pattern Recognition · Computer Science 2026-05-22 Inpyo Song , Jangwon Lee

Semi-supervised video anomaly detection (VAD) is a critical task in the intelligent surveillance system. However, an essential type of anomaly in VAD named scene-dependent anomaly has not received the attention of researchers. Moreover,…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 Congqi Cao , Yue Lu , Peng Wang , Yanning Zhang

Anomaly action detection and localization play an essential role in security and advanced surveillance systems. However, due to the tremendous amount of surveillance videos, most of the available data for the task is unlabeled or…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Nada Osman , Marwan Torki

Abnormal event detection in videos is a challenging problem, partly due to the multiplicity of abnormal patterns and the lack of their corresponding annotations. In this paper, we propose new constrained pretext tasks to learn object level…

Computer Vision and Pattern Recognition · Computer Science 2023-04-25 Yassine Naji , Aleksandr Setkov , Angélique Loesch , Michèle Gouiffès , Romaric Audigier

Video anomaly detection is a challenging task in the computer vision community. Most single task-based methods do not consider the independence of unique spatial and temporal patterns, while two-stream structures lack the exploration of the…

Computer Vision and Pattern Recognition · Computer Science 2022-07-28 Yang Liu , Jing Liu , Mengyang Zhao , Dingkang Yang , Xiaoguang Zhu , Liang Song

Video anomaly detection refers to the identification of events that deviate from the expected behavior. Due to the lack of anomalous samples in training, video anomaly detection becomes a very challenging task. Existing methods almost…

Computer Vision and Pattern Recognition · Computer Science 2022-04-11 Xiangyu Huang , Caidan Zhao , Yilin Wang , Zhiqiang Wu

Anomaly detection from images captured using camera sensors is one of the mainstream applications at the industrial level. Particularly, it maintains the quality and optimizes the efficiency in production processes across diverse industrial…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Abdelrahman Alzarooni , Ehtesham Iqbal , Samee Ullah Khan , Sajid Javed , Brain Moyo , Yusra Abdulrahman

Existing semi-supervised video anomaly detection (VAD) methods often struggle with detecting complex anomalies involving object interactions and generally lack explainability. To overcome these limitations, we propose a novel VAD framework…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Furkan Mumcu , Michael J. Jones , Anoop Cherian , Yasin Yilmaz

Anomaly detection in crowd videos has become a popular area of research for the computer vision community. Several existing methods generally perform a prior training about the scene with or without the use of labeled data. However, it is…

Computer Vision and Pattern Recognition · Computer Science 2019-06-04 Arindam Sikdar , Ananda S. Chowdhury

Anomaly detection plays in many fields of research, along with the strongly related task of outlier detection, a very important role. Especially within the context of the automated analysis of video material recorded by surveillance…

Computer Vision and Pattern Recognition · Computer Science 2019-08-09 Thomas Golda , Nils Murzyn , Chengchao Qu , Kristian Kroschel

Anomaly segmentation is a critical task for driving applications, and it is approached traditionally as a per-pixel classification problem. However, reasoning individually about each pixel without considering their contextual semantics…

Computer Vision and Pattern Recognition · Computer Science 2023-07-26 Shyam Nandan Rai , Fabio Cermelli , Dario Fontanel , Carlo Masone , Barbara Caputo

In recent years, distracted driving has garnered considerable attention as it continues to pose a significant threat to public safety on the roads. This has increased the need for innovative solutions that can identify and eliminate…

Computer Vision and Pattern Recognition · Computer Science 2023-04-20 Kelvin Kwakye , Younho Seong , Armstrong Aboah , Sun Yi

Deploying video anomaly detection in practice is hampered by the scarcity and collection cost of real abnormal footage. We address this by training without any real abnormal videos while evaluating under the standard weakly supervised…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Satoshi Hashimoto , Hitoshi Nishimura , Yanan Wang , Mori Kurokawa

Anomaly detection is generally acknowledged as an important problem that has already drawn attention to various domains and research areas, such as, network security. For such "classic" application domains a wide range of surveys and…

Cryptography and Security · Computer Science 2017-05-19 Kristof Böhmer , Stefanie Rinderle-Ma

Object anomaly detection is an important problem in the field of machine vision and has seen remarkable progress recently. However, two significant challenges hinder its research and application. First, existing datasets lack comprehensive…

Computer Vision and Pattern Recognition · Computer Science 2023-10-12 Qiang Zhou , Weize Li , Lihan Jiang , Guoliang Wang , Guyue Zhou , Shanghang Zhang , Hao Zhao
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