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Surveillance footage can catch a wide range of realistic anomalies. This research suggests using a weakly supervised strategy to avoid annotating anomalous segments in training videos, which is time consuming. In this approach only video…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Kapil Deshpande , Narinder Singh Punn , Sanjay Kumar Sonbhadra , Sonali Agarwal

Visual Anomaly Detection (VAD) is essential for industrial quality control, enabling automatic defect detection in manufacturing. In real production lines, VAD systems must satisfy strict real-time and privacy requirements, necessitating a…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Arianna Stropeni , Fabrizio Genilotti , Francesco Borsatti , Manuel Barusco , Davide Dalle Pezze , Gian Antonio Susto

Open-world video anomaly detection (OWVAD) aims to detect and explain abnormal events under different anomaly definitions, which is important for applications such as intelligent surveillance and live-streaming content moderation. Recent…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Zihao Liu , Xiaoyu Wu , Wenna Li , Jianqin Wu , Linlin Yang

Video Anomaly Detection (VAD) remains a fundamental yet formidable task in the video understanding community, with promising applications in areas such as information forensics and public safety protection. Due to the rarity and diversity…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Yang Liu , Hongjin Wang , Zepu Wang , Xiaoguang Zhu , Jing Liu , Peng Sun , Rui Tang , Jianwei Du , Victor C. M. Leung , Liang Song

Most existing anomaly detection (AD) methods require a dedicated model for each category. Such a paradigm, despite its promising results, is computationally expensive and inefficient, thereby failing to meet the requirements for realworld…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Chaoqin Huang , Haoyan Guan , Aofan Jiang , Ya Zhang , Michael Spratling , Xinchao Wang , Yanfeng Wang

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) has been intensively studied for years because of its potential applications in intelligent video systems. Existing unsupervised VAD methods tend to learn normality from training sets consisting of only normal…

Computer Vision and Pattern Recognition · Computer Science 2023-01-10 Mengyang Zhao , Xinhua Zeng , Yang Liu , Jing Liu , Di Li , Xing Hu , Chengxin Pang

The growing demand for surveillance in public spaces presents significant challenges due to the shortage of human resources. Current AI-based video surveillance systems heavily rely on core computer vision models that require extensive…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Joao Pereira , Vasco Lopes , David Semedo , Joao Neves

Video Anomaly Detection (VAD) is essential for computer vision research. Existing VAD methods utilize either reconstruction-based or prediction-based frameworks. The former excels at detecting irregular patterns or structures, whereas the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Hongsong Wang , Andi Xu , Pinle Ding , Jie Gui

Video anomaly understanding (VAU) aims to provide detailed interpretation and semantic comprehension of anomalous events within videos, addressing limitations of traditional methods that focus solely on detecting and localizing anomalies.…

Computer Vision and Pattern Recognition · Computer Science 2025-12-15 Ying Cheng , Yu-Ho Lin , Min-Hung Chen , Fu-En Yang , Shang-Hong Lai

We introduce Text-based Explainable Video Anomaly Detection (TbVAD), a language-driven framework for weakly supervised video anomaly detection that performs anomaly detection and explanation entirely within the textual domain. Unlike…

Computer Vision and Pattern Recognition · Computer Science 2025-11-12 Hari Lee

Manipulated videos often contain subtle inconsistencies between their visual and audio signals. We propose a video forensics method, based on anomaly detection, that can identify these inconsistencies, and that can be trained solely using…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Chao Feng , Ziyang Chen , Andrew Owens

Semiconductor manufacturing is a complex, multistage process. Automated visual inspection of Scanning Electron Microscope (SEM) images is indispensable for minimizing equipment downtime and containing costs. Most previous research considers…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Manuel Barusco , Francesco Borsatti , Youssef Ben Khalifa , Davide Dalle Pezze , Gian Antonio Susto

Long video understanding is heavily bottlenecked by a rigid one-shot paradigm: existing methods either densely encode videos at prohibitive memory and latency costs, or aggressively compress them into sparse frame sets that irreversibly…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Xiao Yang , Yingzhe Ma , Haoxuan Yu , Zixin Li , Ning Qin

Visual Anomaly Detection (VAD) seeks to identify abnormal images and precisely localize the corresponding anomalous regions, relying solely on normal data during training. This approach has proven essential in domains such as manufacturing…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Manuel Barusco , Francesco Borsatti , Nicola Beda , Davide Dalle Pezze , Gian Antonio Susto

Most video-anomaly research stops at frame-wise detection, offering little insight into why an event is abnormal, typically outputting only frame-wise anomaly scores without spatial or semantic context. Recent video anomaly localization and…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Dongheng Lin , Mengxue Qu , Kunyang Han , Jianbo Jiao , Xiaojie Jin , Yunchao Wei

Anomaly detection in videos is a significant yet challenging problem. Previous approaches based on deep neural networks employ either reconstruction-based or prediction-based approaches. Nevertheless, existing reconstruction-based methods…

Computer Vision and Pattern Recognition · Computer Science 2023-01-31 Yizhou Wang , Can Qin , Yue Bai , Yi Xu , Xu Ma , Yun Fu

Video Anomaly Detection (VAD) aims to locate unusual activities or behaviors within videos. Recently, offline VAD has garnered substantial research attention, which has been invigorated by the progress in large language models (LLMs) and…

Computer Vision and Pattern Recognition · Computer Science 2025-10-27 Shengtian Yang , Yue Feng , Yingshi Liu , Jingrou Zhang , Jie Qin

Streaming video clips with large-scale video tokens impede vision transformers (ViTs) for efficient recognition, especially in video action detection where sufficient spatiotemporal representations are required for precise actor…

Computer Vision and Pattern Recognition · Computer Science 2023-08-29 Lei Chen , Zhan Tong , Yibing Song , Gangshan Wu , Limin Wang

The increasing utilization of surveillance cameras in smart cities, coupled with the surge of online video applications, has heightened concerns regarding public security and privacy protection, which propelled automated Video Anomaly…

Computer Vision and Pattern Recognition · Computer Science 2025-04-04 Jing Liu , Yang Liu , Jieyu Lin , Jielin Li , Liang Cao , Peng Sun , Bo Hu , Liang Song , Azzedine Boukerche , Victor C. M. Leung