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Robust and computationally efficient anomaly detection in videos is a problem in video surveillance systems. We propose a technique to increase robustness and reduce computational complexity in a Convolutional Neural Network (CNN) based…

The key success factor of the video deblurring methods is to compensate for the blurry pixels of the mid-frame with the sharp pixels of the adjacent video frames. Therefore, mainstream methods align the adjacent frames based on the…

计算机视觉与模式识别 · 计算机科学 2022-07-25 Huicong Zhang , Haozhe Xie , Hongxun Yao

Multi-task learning based video anomaly detection methods combine multiple proxy tasks in different branches to detect video anomalies in different situations. Most existing methods either do not combine complementary tasks to effectively…

计算机视觉与模式识别 · 计算机科学 2023-05-12 Mohammad Baradaran , Robert Bergevin

Detecting abnormal activities in real-world surveillance videos is an important yet challenging task as the prior knowledge about video anomalies is usually limited or unavailable. Despite that many approaches have been developed to resolve…

计算机视觉与模式识别 · 计算机科学 2021-07-30 Xinyang Feng , Dongjin Song , Yuncong Chen , Zhengzhang Chen , Jingchao Ni , Haifeng Chen

In this paper, we introduce a novel task, referred to as Weakly-Supervised Spatio-Temporal Anomaly Detection (WSSTAD) in surveillance video. Specifically, given an untrimmed video, WSSTAD aims to localize a spatio-temporal tube (i.e., a…

计算机视觉与模式识别 · 计算机科学 2021-08-10 Jie Wu , Wei Zhang , Guanbin Li , Wenhao Wu , Xiao Tan , Yingying Li , Errui Ding , Liang Lin

As a cost-effective and robust technology, automotive radar has seen steady improvement during the last years, making it an appealing complement to commonly used sensors like camera and LiDAR in autonomous driving. Radio frequency data with…

计算机视觉与模式识别 · 计算机科学 2024-12-23 Yuzhi Wu , Jun Liu , Guangfeng Jiang , Weijian Liu , Danilo Orlando

Video anomaly detection is an essential but challenging task. The prevalent methods mainly investigate the reconstruction difference between normal and abnormal patterns but ignore the semantics consistency between appearance and motion…

计算机视觉与模式识别 · 计算机科学 2023-03-10 Xiangyu Huang , Caidan Zhao , Zhiqiang Wu

Most videos, including those captured through aerial remote sensing, are usually non-stationary in nature having time-varying feature statistics. Although, sophisticated reconstruction and prediction models exist for video anomaly…

计算机视觉与模式识别 · 计算机科学 2025-03-05 Gargi V. Pillai , Debashis Sen

Most unsupervised anomaly detection methods based on representations of normal samples to distinguish anomalies have recently made remarkable progress. However, existing methods only learn a single decision boundary for distinguishing the…

计算机视觉与模式识别 · 计算机科学 2024-09-10 Tianwu Lei , Silin Chen , Bohan Wang , Zhengkai Jiang , Ningmu Zou

Anomaly detection in surveillance videos is currently a challenge because of the diversity of possible events. We propose a deep convolutional neural network (CNN) that addresses this problem by learning a correspondence between common…

计算机视觉与模式识别 · 计算机科学 2019-08-20 Trong Nguyen Nguyen , Jean Meunier

With the widespread deployment of video surveillance devices and the demand for intelligent system development, video anomaly detection (VAD) has become an important part of constructing intelligent surveillance systems. Expanding the…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Jiahao Lyu , Minghua Zhao , Jing Hu , Runtao Xi , Xuewen Huang , Shuangli Du , Cheng Shi , Tian Ma

Anomaly detection through video analysis is of great importance to detect any anomalous vehicle/human behavior at a traffic intersection. While most existing works use neural networks and conventional machine learning methods based on…

Image anomaly detection and localization perform not only image-level anomaly classification but also locate pixel-level anomaly regions. Recently, it has received much research attention due to its wide application in various fields. This…

计算机视觉与模式识别 · 计算机科学 2024-05-28 Chao Huang , Zhao Kang , Hong Wu

Video Anomaly Detection (VAD) presents a significant challenge in computer vision, particularly due to the unpredictable and infrequent nature of anomalous events, coupled with the diverse and dynamic environments in which they occur.…

计算机视觉与模式识别 · 计算机科学 2025-03-18 Ghazal Alinezhad Noghre , Armin Danesh Pazho , Hamed Tabkhi

Anomalies represent deviations from the intended system operation and can lead to decreased efficiency as well as partial or complete system failure. As the causes of anomalies are often unknown due to complex system dynamics, efficient…

机器学习 · 计算机科学 2021-08-31 Benjamin Lindemann , Benjamin Maschler , Nada Sahlab , Michael Weyrich

Recent anomaly detection algorithms have shown powerful performance by adopting frame predicting autoencoders. However, these methods face two challenging circumstances. First, they are likely to be trained to be excessively powerful,…

计算机视觉与模式识别 · 计算机科学 2022-02-15 Chaewon Park , Minhyeok Lee , MyeongAh Cho , Sangyoun Lee

Anomaly detection in surveillance videos remains a challenging task due to the diversity of abnormal events, class imbalance, and scene-dependent visual clutter. To address these issues, we propose a robust deep learning framework that…

计算机视觉与模式识别 · 计算机科学 2025-10-28 Mohammad Ali Etemadi Naeen , Hoda Mohammadzade , Saeed Bagheri Shouraki

Despite the prevailing transition from single-task to multi-task approaches in video anomaly detection, we observe that many adopt sub-optimal frameworks for individual proxy tasks. Motivated by this, we contend that optimizing single-task…

计算机视觉与模式识别 · 计算机科学 2025-04-22 Guodong Shen , Yuqi Ouyang , Junru Lu , Yixuan Yang , Victor Sanchez

We propose a very fast frame-level model for anomaly detection in video, which learns to detect anomalies by distilling knowledge from multiple highly accurate object-level teacher models. To improve the fidelity of our student, we distill…

计算机视觉与模式识别 · 计算机科学 2024-07-18 Florinel-Alin Croitoru , Nicolae-Catalin Ristea , Dana Dascalescu , Radu Tudor Ionescu , Fahad Shahbaz Khan , Mubarak Shah

The application of deep learning in visual anomaly detection has gained widespread popularity due to its potential use in quality control and manufacturing. Current standard methods are Unsupervised, where a clean dataset is utilised to…

计算机视觉与模式识别 · 计算机科学 2024-10-04 Shaurya Gupta , Neil Gautam , Anurag Malyala