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It has been well recognized that modeling human-object or object-object relations would be helpful for detection task. Nevertheless, the problem is not trivial especially when exploring the interactions between human actor, object and scene…

Computer Vision and Pattern Recognition · Computer Science 2020-04-01 Dong Li , Ting Yao , Zhaofan Qiu , Houqiang Li , Tao Mei

Current weakly supervised video anomaly detection (WSVAD) task aims to achieve frame-level anomalous event detection with only coarse video-level annotations available. Existing works typically involve extracting global features from…

Computer Vision and Pattern Recognition · Computer Science 2024-08-14 Peng Wu , Xuerong Zhou , Guansong Pang , Zhiwei Yang , Qingsen Yan , Peng Wang , Yanning Zhang

Aiming at the problem that the current video anomaly detection cannot fully use the temporal information and ignore the diversity of normal behavior, an anomaly detection method is proposed to integrate the spatiotemporal information of…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Chao Hu , Liqiang Zhu

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…

Computer Vision and Pattern Recognition · Computer Science 2018-08-31 Mohammmad Farhadi Bajestani , Seyed Soroush Heidari Rahmat Abadi , Seyed Mostafa Derakhshandeh Fard , Roozbeh Khodadadeh

Scene flow prediction is a crucial underlying task in understanding dynamic scenes as it offers fundamental motion information. However, contemporary scene flow methods encounter three major challenges. Firstly, flow estimation solely based…

Computer Vision and Pattern Recognition · Computer Science 2024-11-15 Zhiyang Lu , Qinghan Chen , Ming Cheng

Anomaly detection from a driver's perspective when driving is important to autonomous vehicles. As a part of Advanced Driver Assistance Systems (ADAS), it can remind the driver about dangers timely. Compared with traditional studied scenes…

Computer Vision and Pattern Recognition · Computer Science 2019-05-01 Yuan Yuan , Dong Wang , Qi Wang

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…

Computer Vision and Pattern Recognition · Computer Science 2020-04-14 Sijie Zhu , Chen Chen , Waqas Sultani

Statistical Relational Learning (SRL) methods for anomaly detection are introduced via a security-related application. Operational requirements for online learning stability are outlined and compared to mathematical definitions as applied…

Machine Learning · Computer Science 2017-05-19 Magnus Jändel , Pontus Svenson , Niclas Wadströmer

Video-based person re-identification aims to match pedestrians from video sequences across non-overlapping camera views. The key factor for video person re-identification is to effectively exploit both spatial and temporal clues from video…

Computer Vision and Pattern Recognition · Computer Science 2021-04-19 Jiawei Liu , Zheng-Jun Zha , Wei Wu , Kecheng Zheng , Qibin Sun

Video anomaly detection has great potential in enhancing safety in the production and monitoring of crucial areas. Currently, most video anomaly detection methods are based on RGB modality, but its redundant semantic information may breach…

Computer Vision and Pattern Recognition · Computer Science 2023-06-08 Tengjiao He , Wenguang Wang

Temporal relational reasoning, the ability to link meaningful transformations of objects or entities over time, is a fundamental property of intelligent species. In this paper, we introduce an effective and interpretable network module, the…

Computer Vision and Pattern Recognition · Computer Science 2018-07-26 Bolei Zhou , Alex Andonian , Aude Oliva , Antonio Torralba

Most existing video moment retrieval methods rely on temporal sequences of frame- or clip-level features that primarily encode global visual and semantic information. However, such representations often fail to capture fine-grained object…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Zongyao Li , Yongkang Wong , Satoshi Yamazaki , Jianquan Liu , Mohan Kankanhalli

We propose a novel unsupervised approach based on a two-stage object-centric adversarial framework that only needs object regions for detecting frame-level local anomalies in videos. The first stage consists in learning the correspondence…

Computer Vision and Pattern Recognition · Computer Science 2020-11-16 Pankaj Raj Roy , Guillaume-Alexandre Bilodeau , Lama Seoud

Transferring existing image-based detectors to the video is non-trivial since the quality of frames is always deteriorated by part occlusion, rare pose, and motion blur. Previous approaches exploit to propagate and aggregate features across…

Computer Vision and Pattern Recognition · Computer Science 2020-07-17 Zhengkai Jiang , Yu Liu , Ceyuan Yang , Jihao Liu , Peng Gao , Qian Zhang , Shiming Xiang , Chunhong Pan

Prior studies on Video Anomaly Detection (VAD) mainly focus on detecting whether each video frame is abnormal or not in the video, which largely ignore the structured video semantic information (i.e., what, when, and where does the abnormal…

Computer Vision and Pattern Recognition · Computer Science 2025-02-27 Junxiao Ma , Jingjing Wang , Jiamin Luo , Peiying Yu , Guodong Zhou

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…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Ayush K. Rai , Tarun Krishna , Feiyan Hu , Alexandru Drimbarean , Kevin McGuinness , Alan F. Smeaton , Noel E. O'Connor

Detecting anomalous edges and nodes in dynamic networks is critical in various areas, such as social media, computer networks, and so on. Recent approaches leverage network embedding technique to learn how to generate node representations…

Social and Information Networks · Computer Science 2020-07-15 Chenming Yang , Liang Zhou , Hui Wen , Zhiheng Zhou , Yue Wu

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…

Computer Vision and Pattern Recognition · Computer Science 2022-05-05 Mohammad Baradaran , Robert Bergevin

This paper strives to solve complex video question answering (VideoQA) which features long video containing multiple objects and events at different time. To tackle the challenge, we highlight the importance of identifying question-critical…

Computer Vision and Pattern Recognition · Computer Science 2023-07-25 Yicong Li , Junbin Xiao , Chun Feng , Xiang Wang , Tat-Seng Chua

Despite the success of deep learning for static image understanding, it remains unclear what are the most effective network architectures for the spatial-temporal modeling in videos. In this paper, in contrast to the existing CNN+RNN or…

Computer Vision and Pattern Recognition · Computer Science 2018-12-12 Dongliang He , Zhichao Zhou , Chuang Gan , Fu Li , Xiao Liu , Yandong Li , Limin Wang , Shilei Wen