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Zero-Shot Anomaly Detection (ZSAD) is an emerging AD paradigm. Unlike the traditional unsupervised AD setting that requires a large number of normal samples to train a model, ZSAD is more practical for handling data-restricted real-world…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Jiacong Xu , Shao-Yuan Lo , Bardia Safaei , Vishal M. Patel , Isht Dwivedi

Time series anomaly detection (TSAD) plays a crucial role in various industries by identifying atypical patterns that deviate from standard trends, thereby maintaining system integrity and enabling prompt response measures. Traditional TSAD…

Computation and Language · Computer Science 2024-05-27 Jun Liu , Chaoyun Zhang , Jiaxu Qian , Minghua Ma , Si Qin , Chetan Bansal , Qingwei Lin , Saravan Rajmohan , Dongmei Zhang

Automatic vision inspection holds significant importance in industry inspection. While multimodal large language models (MLLMs) exhibit strong language understanding capabilities and hold promise for this task, their performance remains…

Information Retrieval · Computer Science 2026-04-06 Kai Zhang , Zekai Zhang , Xihe Sun , Anpeng Wang , Jingmeng Nie , Qinghui Chen , Han Hao , Jianyuan Guo , Jinglin Zhang

Anomaly detection has attracted considerable search attention. However, existing anomaly detection databases encounter two major problems. Firstly, they are limited in scale. Secondly, training sets contain only video-level labels…

Computer Vision and Pattern Recognition · Computer Science 2021-06-17 Boyang Wan , Wenhui Jiang , Yuming Fang , Zhiyuan Luo , Guanqun Ding

Industrial anomaly detection is a critical component of modern manufacturing, yet the scarcity of defective samples restricts traditional detection methods to scenario-specific applications. Although Vision-Language Models (VLMs)…

Computer Vision and Pattern Recognition · Computer Science 2025-08-15 Yanhui Li , Yunkang Cao , Chengliang Liu , Yuan Xiong , Xinghui Dong , Chao Huang

Video Anomaly Understanding (VAU) is essential for applications such as smart cities, security surveillance, and disaster alert systems, yet remains challenging due to its demand for fine-grained spatio-temporal perception and robust…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Liyun Zhu , Qixiang Chen , Xi Shen , Xiaodong Cun

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…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Chenchen Tao , Xiaohao Peng , Chong Wang , Jiafei Wu , Puning Zhao , Jun Wang , Jiangbo Qian

The widespread use of cameras in our society has created an overwhelming amount of video data, far exceeding the capacity for human monitoring. This presents a critical challenge for public safety and security, as the timely detection of…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Pascal Benschop , Cristian Meo , Justin Dauwels , Jelte P. Mense

Foundation models, e.g., large language models (LLMs), trained on internet-scale data possess zero-shot generalization capabilities that make them a promising technology towards detecting and mitigating out-of-distribution failure modes of…

Robotics · Computer Science 2024-07-12 Rohan Sinha , Amine Elhafsi , Christopher Agia , Matthew Foutter , Edward Schmerling , Marco Pavone

Video anomaly detection (VAD) is essential for enhancing safety and security by identifying unusual events across different environments. Existing VAD benchmarks, however, are primarily designed for general-purpose scenarios, neglecting the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-17 Xinyi Zhao , Congjing Zhang , Pei Guo , Wei Li , Lin Chen , Chaoyue Zhao , Shuai 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…

Computer Vision and Pattern Recognition · Computer Science 2022-06-20 Joo-Yeon Lee , Woo-Jeoung Nam , Seong-Whan Lee

Recent advances in industrial anomaly detection have highlighted the need for deeper logical anomaly analysis, where unexpected relationships among objects, counts, and spatial configurations must be identified and explained. Existing…

Computer Vision and Pattern Recognition · Computer Science 2025-04-18 Weijia Li , Guanglei Chu , Jiong Chen , Guo-Sen Xie , Caifeng Shan , Fang Zhao

Visual anomaly detection (VAD) is crucial in many real-world fields, such as industrial inspection, medical imaging, infrastructure monitoring, and remote sensing. However, the specific anomaly definitions, data modalities, and annotation…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Xi Jiang , Yinjie Zhao , Zesheng Yang , Feng Zheng

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

Anomaly detection (AD) is an important machine learning task with many real-world uses, including fraud detection, medical diagnosis, and industrial monitoring. Within natural language processing (NLP), AD helps detect issues like spam,…

Computation and Language · Computer Science 2025-10-13 Tiankai Yang , Yi Nian , Shawn Li , Ruiyao Xu , Yuangang Li , Jiaqi Li , Zhuo Xiao , Xiyang Hu , Ryan Rossi , Kaize Ding , Xia Hu , Yue Zhao

We tackle the complex problem of detecting and recognising anomalies in surveillance videos at the frame level, utilising only video-level supervision. We introduce the novel method AnomalyCLIP, the first to combine Large Language and…

Computer Vision and Pattern Recognition · Computer Science 2023-10-05 Luca Zanella , Benedetta Liberatori , Willi Menapace , Fabio Poiesi , Yiming Wang , Elisa Ricci

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

Explainable video anomaly detection (VAD) is crucial for safety-critical applications, yet even with recent progress, much of the research still lacks spatial grounding, making the explanations unverifiable. This limitation is especially…

Computer Vision and Pattern Recognition · Computer Science 2026-01-14 Inpyo Song , Minjun Joo , Joonhyung Kwon , Eunji Jeon , Jangwon Lee

Anomaly detection is a popular and vital task in various research contexts, which has been studied for several decades. To ensure the safety of people's lives and assets, video surveillance has been widely deployed in various public spaces,…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Jing Ren , Feng Xia , Yemeng Liu , Ivan Lee

The reliability of a machine vision system for autonomous driving depends heavily on its training data distribution. When a vehicle encounters significantly different conditions, such as atypical obstacles, its perceptual capabilities can…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Fabrizio Genilotti , Arianna Stropeni , Gionata Grotto , Francesco Borsatti , Manuel Barusco , Davide Dalle Pezze , Gian Antonio Susto