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Related papers: LogicAD: Explainable Anomaly Detection via VLM-bas…

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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

Detecting visual anomalies in diverse, multi-class real-world images is a significant challenge. We introduce \ours, a novel unsupervised multi-class visual anomaly detection framework. It integrates a Latent Diffusion Model (LDM) with a…

Computer Vision and Pattern Recognition · Computer Science 2025-11-12 Samet Hicsonmez , Abd El Rahman Shabayek , Djamila Aouada

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

In industrial settings, the accurate detection of anomalies is essential for maintaining product quality and ensuring operational safety. Traditional industrial anomaly detection (IAD) models often struggle with flexibility and…

Computer Vision and Pattern Recognition · Computer Science 2025-01-28 Zhiling Chen , Hanning Chen , Mohsen Imani , Farhad Imani

Multimodal Large Language Models (MLLMs) have achieved impressive success in natural visual understanding, yet they consistently underperform in industrial anomaly detection (IAD). This is because MLLMs trained mostly on general web data…

Computer Vision and Pattern Recognition · Computer Science 2026-04-22 Xi Jiang , Yue Guo , Jian Li , Yong Liu , Bin-Bin Gao , Hanqiu Deng , Jun Liu , Heng Zhao , Chengjie Wang , Feng Zheng

As the IT industry advances, system log data becomes increasingly crucial. Many computer systems rely on log texts for management due to restricted access to source code. The need for log anomaly detection is growing, especially in…

Machine Learning · Computer Science 2023-11-10 Gunho No , Yukyung Lee , Hyeongwon Kang , Pilsung Kang

Vision-Language Models (VLMs), particularly CLIP, have revolutionized anomaly detection by enabling zero-shot and few-shot defect identification without extensive labeled datasets. By learning aligned representations of images and text,…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Mohit Kakda , Mirudula Shri Muthukumaran , Uttapreksha Patel , Lawrence Swaminathan Xavier Prince

Anomaly detection (AD) plays a pivotal role in multimedia applications for detecting defective products and automating quality inspection. Deep learning (DL) models typically require large-scale annotated data, which are often highly…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Eirini Cholopoulou , Dimitris K. Iakovidis

Multimodal large language models (MLLMs) have recently demonstrated remarkable reasoning and perceptual abilities for anomaly detection. However, most approaches remain confined to image-level anomaly detection and textual reasoning, while…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Yizhou Jin , Yuezhu Feng , Jinjin Zhang , Peng Wang , Qingjie Liu , Yunhong Wang

Benefiting from generalizability of vision-language models (VLMs) such as CLIP, many zero-/few-shot anomaly detection (AD) approaches have achieved impressive detection performance across various datasets. Nevertheless, they require…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Yi Zhang , Jiawen Zhu , Lele Fu , Guansong Pang

This paper presents LogiCode, a novel framework that leverages Large Language Models (LLMs) for identifying logical anomalies in industrial settings, moving beyond traditional focus on structural inconsistencies. By harnessing LLMs for…

Machine Learning · Computer Science 2024-06-10 Yiheng Zhang , Yunkang Cao , Xiaohao Xu , Weiming Shen

Extracting meaningful entities belonging to predefined categories from Visually-rich Form-like Documents (VFDs) is a challenging task. Visual and layout features such as font, background, color, and bounding box location and size provide…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Hao Wang , Xiahua Chen , Rui Wang , Chenhui Chu

Zero-shot anomaly detection (ZSAD) requires detecting and localizing anomalies without access to target-class anomaly samples. Mainstream methods rely on vision-language models (VLMs) such as CLIP: they build hand-crafted or learned prompt…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Yanning Hou , Peiyuan Li , Zirui Liu , Yitong Wang , Yanran Ruan , Jianfeng Qiu , Ke Xu

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

To improve logical anomaly detection, some previous works have integrated segmentation techniques with conventional anomaly detection methods. Although these methods are effective, they frequently lead to unsatisfactory segmentation results…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Yu-Hsuan Hsieh , Shang-Hong Lai

Time series anomaly detection (TSAD) has been a long-standing pillar problem in Web-scale systems and online infrastructures, such as service reliability monitoring, system fault diagnosis, and performance optimization. Large language…

Computation and Language · Computer Science 2026-02-18 Xiongxiao Xu , Haoran Wang , Yueqing Liang , Philip S. Yu , Yue Zhao , Kai Shu

Visual sensory anomaly detection (AD) is an essential problem in computer vision, which is gaining momentum recently thanks to the development of AI for good. Compared with semantic anomaly detection which detects anomaly at the label level…

Computer Vision and Pattern Recognition · Computer Science 2022-02-16 Xi Jiang , Guoyang Xie , Jinbao Wang , Yong Liu , Chengjie Wang , Feng Zheng , Yaochu Jin

Anomaly detection and localization in visual data, including images and videos, are crucial in machine learning and real-world applications. Despite rapid advancements in visual anomaly detection (VAD), interpreting these often black-box…

Machine Learning · Computer Science 2025-08-19 Yizhou Wang , Dongliang Guo , Sheng Li , Octavia Camps , Yun Fu

Anomaly detection, which aims to identify anomalies deviating from normal patterns, is challenging due to the limited amount of normal data available. Unlike most existing unified methods that rely on carefully designed image feature…

Computer Vision and Pattern Recognition · Computer Science 2025-09-01 Jiawei Liu , Jiahe Hou , Wei Wang , Jinsong Du , Yang Cong , Huijie Fan

Aligning visual features with language embeddings is a key challenge in vision-language models (VLMs). The performance of such models hinges on having a good connector that maps visual features generated by a vision encoder to a shared…