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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…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Chenchen Tao , Xiaohao Peng , Chong Wang , Jiafei Wu , Puning Zhao , Jun Wang , Jiangbo Qian

Video anomaly detection (VAD) is an important but challenging task in computer vision. The main challenge rises due to the rarity of training samples to model all anomaly cases. Hence, semi-supervised anomaly detection methods have gotten…

计算机视觉与模式识别 · 计算机科学 2023-08-16 Mohammad Baradaran , Robert Bergevin

Video anomaly detection (VAD) is crucial for video analysis and surveillance in computer vision. However, existing VAD models rely on learned normal patterns, which makes them difficult to apply to diverse environments. Consequently, users…

计算机视觉与模式识别 · 计算机科学 2025-12-08 Sunghyun Ahn , Youngwan Jo , Kijung Lee , Sein Kwon , Inpyo Hong , Sanghyun Park

Video anomaly detection (VAD) with weak supervision has achieved remarkable performance in utilizing video-level labels to discriminate whether a video frame is normal or abnormal. However, current approaches are inherently limited to a…

计算机视觉与模式识别 · 计算机科学 2024-03-14 Peng Wu , Xuerong Zhou , Guansong Pang , Yujia Sun , Jing Liu , Peng Wang , Yanning Zhang

As a vital topic in media content interpretation, video anomaly detection (VAD) has made fruitful progress via deep neural network (DNN). However, existing methods usually follow a reconstruction or frame prediction routine. They suffer…

计算机视觉与模式识别 · 计算机科学 2020-08-28 Guang Yu , Siqi Wang , Zhiping Cai , En Zhu , Chuanfu Xu , Jianping Yin , Marius Kloft

Video anomaly detection (VAD) is a significant computer vision problem. Existing deep neural network (DNN) based VAD methods mostly follow the route of frame reconstruction or frame prediction. However, the lack of mining and learning of…

计算机视觉与模式识别 · 计算机科学 2023-04-12 Zhiwei Yang , Jing Liu , Zhaoyang Wu , Peng Wu , Xiaotao Liu

Video anomaly detection (VAD) aims to identify unexpected events in videos and has wide applications in safety-critical domains. While semi-supervised methods trained on only normal samples have gained traction, they often suffer from high…

计算机视觉与模式识别 · 计算机科学 2025-04-15 Zongcan Ding , Haodong Zhang , Peng Wu , Guansong Pang , Zhiwei Yang , Peng Wang , Yanning Zhang

Weakly-Supervised Video Anomaly Detection aims to identify anomalous events using only video-level labels, balancing annotation efficiency with practical applicability. However, existing methods often oversimplify the anomaly space by…

计算机视觉与模式识别 · 计算机科学 2025-12-30 Junhee Lee , ChaeBeen Bang , MyoungChul Kim , MyeongAh Cho

Video Anomaly Detection (VAD) represents a challenging and prominent research task within computer vision. In recent years, Pose-based Video Anomaly Detection (PAD) has drawn considerable attention from the research community due to several…

计算机视觉与模式识别 · 计算机科学 2024-06-25 Ghazal Alinezhad Noghre , Armin Danesh Pazho , Hamed Tabkhi

Event cameras encode visual information with high temporal precision, low data-rate, and high-dynamic range. Thanks to these characteristics, event cameras are particularly suited for scenarios with high motion, challenging lighting…

计算机视觉与模式识别 · 计算机科学 2020-12-10 Etienne Perot , Pierre de Tournemire , Davide Nitti , Jonathan Masci , Amos Sironi

Video Anomaly Detection (VAD), aiming to identify abnormalities within a specific context and timeframe, is crucial for intelligent Video Surveillance Systems. While recent deep learning-based VAD models have shown promising results by…

计算机视觉与模式识别 · 计算机科学 2024-03-29 Hao Shen , Lu Shi , Wanru Xu , Yigang Cen , Linna Zhang , Gaoyun An

Semi-supervised video anomaly detection (VAD) methods formulate the task of anomaly detection as detection of deviations from the learned normal patterns. Previous works in the field (reconstruction or prediction-based methods) suffer from…

计算机视觉与模式识别 · 计算机科学 2022-05-05 Mohammad Baradaran , Robert Bergevin

Anomaly detection (AD) is a fundamental task for time-series analytics with important implications for the downstream performance of many applications. In contrast to other domains where AD mainly focuses on point-based anomalies (i.e.,…

Video Anomaly Detection (VAD) is an open-set recognition task, which is usually formulated as a one-class classification (OCC) problem, where training data is comprised of videos with normal instances while test data contains both normal…

计算机视觉与模式识别 · 计算机科学 2024-04-09 Ayush K. Rai , Tarun Krishna , Feiyan Hu , Alexandru Drimbarean , Kevin McGuinness , Alan F. Smeaton , Noel E. O'Connor

Video Anomaly Detection (VAD) aims to identify anomalous events in videos and accurately determine their time intervals. Current VAD methods mainly fall into two categories: traditional DNN-based approaches that focus on temporal…

计算机视觉与模式识别 · 计算机科学 2025-07-30 Shibo Gao , Peipei Yang , Yangyang Liu , Yi Chen , Han Zhu , Xuyao Zhang , Linlin Huang

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…

计算机视觉与模式识别 · 计算机科学 2022-06-20 Joo-Yeon Lee , Woo-Jeoung Nam , Seong-Whan Lee

In modern intelligent video surveillance systems, automatic anomaly detection through computer vision analytics plays a pivotal role which not only significantly increases monitoring efficiency but also reduces the burden on live…

计算机视觉与模式识别 · 计算机科学 2020-04-14 Sijie Zhu , Chen Chen , Waqas Sultani

Traditional visual place recognition (VPR) methods generally use frame-based cameras, which is easy to fail due to dramatic illumination changes or fast motions. In this paper, we propose an end-to-end visual place recognition network for…

计算机视觉与模式识别 · 计算机科学 2020-11-09 Delei Kong , Zheng Fang , Haojia Li , Kuanxu Hou , Sonya Coleman , Dermot Kerr

Event-based vision has been rapidly growing in recent years justified by the unique characteristics it presents such as its high temporal resolutions (~1us), high dynamic range (>120dB), and output latency of only a few microseconds. This…

计算机视觉与模式识别 · 计算机科学 2023-01-03 Zaid El-Shair , Samir Rawashdeh

Most existing video anomaly detectors rely solely on RGB frames, which lack the temporal resolution needed to capture abrupt or transient motion cues, key indicators of anomalous events. To address this limitation, we propose Image-Event…

计算机视觉与模式识别 · 计算机科学 2025-05-09 Sungheon Jeong , Jihong Park , Mohsen Imani