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Numerous methods for time-series anomaly detection (TSAD) have emerged in recent years, most of which are unsupervised and assume that only normal samples are available during the training phase, due to the challenge of obtaining abnormal…

机器学习 · 计算机科学 2024-08-08 Thomas Lai , Thi Kieu Khanh Ho , Narges Armanfard

Anomaly detection (AD) identifies outliers for applications like defect and lesion detection. While CLIP shows promise for zero-shot AD tasks due to its strong generalization capabilities, its inherent Anomaly-Unawareness leads to limited…

计算机视觉与模式识别 · 计算机科学 2025-03-11 Wenxin Ma , Xu Zhang , Qingsong Yao , Fenghe Tang , Chenxu Wu , Yingtai Li , Rui Yan , Zihang Jiang , S. Kevin Zhou

Graph Anomaly Detection (GAD) aims to identify irregular patterns in graph data, and recent works have explored zero-shot generalist GAD to enable generalization to unseen graph datasets. However, existing zero-shot GAD methods largely…

机器学习 · 计算机科学 2026-02-10 Xinyu Zhao , Qingyun Sun , Jiayi Luo , Xingcheng Fu , Jianxin Li

Although industrial anomaly detection (AD) technology has made significant progress in recent years, generating realistic anomalies and learning priors of normal remain challenging tasks. In this study, we propose an end-to-end industrial…

计算机视觉与模式识别 · 计算机科学 2023-09-19 Xuan Xia , Weijie Lv , Xing He , Nan Li , Chuanqi Liu , Ning Ding

This paper studies zero-shot anomaly classification (AC) and segmentation (AS) in industrial vision. We reveal that the abundant normal and abnormal cues implicit in unlabeled test images can be exploited for anomaly determination, which is…

计算机视觉与模式识别 · 计算机科学 2024-01-31 Xurui Li , Ziming Huang , Feng Xue , Yu Zhou

Zero-Shot Anomaly Detection (ZSAD) leverages Vision-Language Models (VLMs) to enable supervision-free industrial inspection. However, existing ZSAD paradigms are constrained by single visual backbones, which struggle to balance global…

计算机视觉与模式识别 · 计算机科学 2026-01-21 Chenhao Fu , Han Fang , Xiuzheng Zheng , Wenbo Wei , Yonghua Li , Hao Sun , Xuelong Li

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…

计算机视觉与模式识别 · 计算机科学 2025-11-04 Dongheng Lin , Mengxue Qu , Kunyang Han , Jianbo Jiao , Xiaojie Jin , Yunchao Wei

Anomaly detection on attributed graphs plays an essential role in applications such as fraud detection, intrusion monitoring, and misinformation analysis. However, text-attributed graphs (TAGs), in which node information is expressed in…

Despite the rapid advance of unsupervised anomaly detection, existing methods require to train separate models for different objects. In this work, we present UniAD that accomplishes anomaly detection for multiple classes with a unified…

计算机视觉与模式识别 · 计算机科学 2022-10-26 Zhiyuan You , Lei Cui , Yujun Shen , Kai Yang , Xin Lu , Yu Zheng , Xinyi Le

Unsupervised anomaly detection (AD) in medical images aims to identify abnormal regions without relying on pixel-level annotations, which is crucial for scalable and label-efficient diagnostic systems. In this paper, we propose a novel…

图像与视频处理 · 电气工程与系统科学 2026-02-05 Jiayu Huo , Jingyuan Hong , Liyun Chen

Weakly Supervised Monitoring Anomaly Detection (WSMAD) utilizes weak supervision learning to identify anomalies, a critical task for smart city monitoring. However, existing multimodal approaches often fail to meet the real-time and…

计算机视觉与模式识别 · 计算机科学 2025-09-24 Wen-Dong Jiang , Chih-Yung Chang , Hsiang-Chuan Chang , Ji-Yuan Chen , Diptendu Sinha Roy

Unsupervised anomaly detection (UAD) attracts a lot of research interest and drives widespread applications, where only anomaly-free samples are available for training. Some UAD applications intend to further locate the anomalous regions…

计算机视觉与模式识别 · 计算机科学 2023-08-30 Yixuan Zhou , Xing Xu , Jingkuan Song , Fumin Shen , Heng Tao Shen

This paper explores the problem of class-agnostic anomaly detection (AD), where the objective is to train one class-agnostic AD model that can generalize to detect anomalies in diverse new classes from different domains without any…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Xincheng Yao , Chao Shi , Muming Zhao , Guangtao Zhai , Chongyang Zhang

Visual Anomaly Detection (VAD) aims to identify abnormal samples in images that deviate from normal patterns, covering multiple domains, including industrial, logical, and medical fields. Due to the domain gaps between these fields,…

计算机视觉与模式识别 · 计算机科学 2025-03-11 Zhaopeng Gu , Bingke Zhu , Guibo Zhu , Yingying Chen , Ming Tang , Jinqiao Wang

Medical Anomaly Detection (MedAD) presents a significant opportunity to enhance diagnostic accuracy using Large Multimodal Models (LMMs) to interpret and answer questions based on medical images. However, the reliance on Supervised…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Haitao Zhang , Yingying Wang , Jiaxiang Wang , Haote Xu , Hongyang Zhang , Yirong Chen , Yue Huang , Xinghao Ding

Anomaly detection techniques enable effective anomaly detection and diagnosis in multi-variate time series data, which are of major significance for today's industrial applications. However, establishing an anomaly detection system that can…

机器学习 · 计算机科学 2024-05-02 Lingrui Yu

UAVs, commonly referred to as drones, have witnessed a remarkable surge in popularity due to their versatile applications. These cyber-physical systems depend on multiple sensor inputs, such as cameras, GPS receivers, accelerometers, and…

软件工程 · 计算机科学 2025-10-21 Ivan Tan , Wei Minn , Christopher M. Poskitt , Lwin Khin Shar , Lingxiao Jiang

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

One pivot challenge for image anomaly (AD) detection is to learn discriminative information only from normal class training images. Most image reconstruction based AD methods rely on the discriminative capability of reconstruction error.…

计算机视觉与模式识别 · 计算机科学 2020-07-21 Dongyun Lin , Yiqun Li , Shudong Xie , Tin Lay Nwe , Sheng Dong

Industrial anomaly detection is increasingly relying on foundation models, aiming for strong out-of-distribution generalization and rapid adaptation in real-world deployments. Notably, past studies have primarily focused on textual prompt…

计算机视觉与模式识别 · 计算机科学 2026-01-23 Po-Han Huang , Jeng-Lin Li , Po-Hsuan Huang , Ming-Ching Chang , Wei-Chao Chen