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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…

Computer Vision and Pattern Recognition · Computer Science 2024-03-14 Peng Wu , Xuerong Zhou , Guansong Pang , Yujia Sun , Jing Liu , Peng Wang , Yanning Zhang

Anomaly detection is a challenging problem in intelligent video surveillance. Most existing methods are computation consuming, which cannot satisfy the real-time requirement. In this paper, we propose a real-time anomaly detection framework…

Computer Vision and Pattern Recognition · Computer Science 2018-12-13 Huihui Zhu , Bin Liu , Guojun Yin , Yan Lu , Weihai Li , Nenghai Yu

We consider the problem of estimating frame-level full human body meshes given a video of a person with natural motion dynamics. While much progress in this field has been in single image-based mesh estimation, there has been a recent…

Computer Vision and Pattern Recognition · Computer Science 2021-07-28 Runze Li , Srikrishna Karanam , Ren Li , Terrence Chen , Bir Bhanu , Ziyan Wu

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

Video anomaly detection is to determine whether there are any abnormal events, behaviors or objects in a given video, which enables effective and intelligent public safety management. As video anomaly labeling is both time-consuming and…

Computer Vision and Pattern Recognition · Computer Science 2024-07-08 Yang Wang , Jiaogen Zhou , Jihong Guan

Upsurging abnormal activities in crowded locations such as airports, train stations, bus stops, shopping malls, etc., urges the necessity for an intelligent surveillance system. An intelligent surveillance system can differentiate between…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Shahriar Jahan , Roknuzzaman , Md Robiul Islam

Video Anomaly Detection (VAD), which aims to detect anomalies that deviate from expectation, has attracted increasing attention in recent years. Existing advancements in VAD primarily focus on model architectures and training strategies,…

Computer Vision and Pattern Recognition · Computer Science 2025-11-03 Zihao Liu , Xiaoyu Wu , Wenna Li , Linlin Yang , Shengjin Wang

Video anomaly detection (VAD) aims to discover behaviors or events deviating from the normality in videos. As a long-standing task in the field of computer vision, VAD has witnessed much good progress. In the era of deep learning, with the…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Peng Wu , Chengyu Pan , Yuting Yan , Guansong Pang , Peng Wang , Yanning Zhang

This paper focuses on detecting anomalies in surveillance video using keywords by leveraging foundational models' feature representation generalization capabilities. We present a novel, lightweight pipeline for anomaly classification using…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 Thomas Foltz

A recent endeavor in one class of video anomaly detection is to leverage diffusion models and posit the task as a generation problem, where the diffusion model is trained to recover normal patterns exclusively, thus reporting abnormal…

Computer Vision and Pattern Recognition · Computer Science 2024-12-13 Hang Zhou , Jiale Cai , Yuteng Ye , Yonghui Feng , Chenxing Gao , Junqing Yu , Zikai Song , Wei Yang

Video anomaly detection is a subject of great interest across industrial and academic domains due to its crucial role in computer vision applications. However, the inherent unpredictability of anomalies and the scarcity of anomaly samples…

Computer Vision and Pattern Recognition · Computer Science 2024-09-27 Yalong Jiang , Liquan Mao

Humans detect real-world object anomalies by perceiving, interacting, and reasoning based on object-conditioned physical knowledge. The long-term goal of Industrial Anomaly Detection (IAD) is to enable machines to autonomously replicate…

Computer Vision and Pattern Recognition · Computer Science 2025-03-27 Wenqiao Li , Yao Gu , Xintao Chen , Xiaohao Xu , Ming Hu , Xiaonan Huang , Yingna Wu

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…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Sunghyun Ahn , Youngwan Jo , Kijung Lee , Sein Kwon , Inpyo Hong , Sanghyun Park

This paper proposes a simple yet effective method for human action recognition in video. The proposed method separately extracts local appearance and motion features using state-of-the-art three-dimensional convolutional neural networks…

Computer Vision and Pattern Recognition · Computer Science 2020-02-24 David Torpey , Turgay Celik

Monitoring and analyzing stereotypical behaviours is important for early intervention and care taking in Autism Spectrum Disorder (ASD). This paper focuses on automatically detecting stereotypical behaviours with computer vision techniques.…

Computer Vision and Pattern Recognition · Computer Science 2023-05-15 Jiaqi Gao , Xinyang Jiang , Yuqing Yang , Dongsheng Li , Lili Qiu

Human pose estimation is one of the key problems in computer vision that has been studied in the recent years. The significance of human pose estimation is in the higher level tasks of understanding human actions applications such as…

Computer Vision and Pattern Recognition · Computer Science 2014-08-26 Oinam Binarani Devi , Nissi S. Paul , Y. Jayanta Singh

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.…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Ghazal Alinezhad Noghre , Armin Danesh Pazho , Hamed Tabkhi

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

We present an improved clustering based, unsupervised anomalous trajectory detection algorithm for crowded scenes. The proposed work is based on four major steps, namely, extraction of trajectories from crowded scene video, extraction of…

Computer Vision and Pattern Recognition · Computer Science 2019-07-04 Deepan Das , Deepak Mishra

Anomalous activity recognition deals with identifying the patterns and events that vary from the normal stream. In a surveillance paradigm, these events range from abuse to fighting and road accidents to snatching, etc. Due to the sparse…

Computer Vision and Pattern Recognition · Computer Science 2021-01-05 R. Maqsood , UI. Bajwa , G. Saleem , Rana H. Raza , MW. Anwar