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Related papers: VisualAD: Language-Free Zero-Shot Anomaly Detectio…

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Zero-shot anomaly detection (ZSAD) aims to identify anomalies in unseen categories by leveraging CLIP's zero-shot capabilities to match text prompts with visual features. A key challenge in ZSAD is learning general prompts stably and…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Donghyeong Kim , Chaewon Park , Suhwan Cho , Hyeonjeong Lim , Minseok Kang , Jungho Lee , Sangyoun Lee

This technical report outlines our submission to the zero-shot track of the Visual Anomaly and Novelty Detection (VAND) 2023 Challenge. Building on the performance of the WINCLIP framework, we aim to enhance the system's localization…

Computer Vision and Pattern Recognition · Computer Science 2023-06-16 Matthew Baugh , James Batten , Johanna P. Müller , Bernhard Kainz

Detecting visual anomalies in industrial inspection often requires training with only a few normal images per category. Recent few-shot methods achieve strong results employing foundation-model features, but typically rely on memory banks,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Camile Lendering , Erkut Akdag , Egor Bondarev

Pre-trained Vision-Language Models (VLMs) struggle with Zero-Shot Anomaly Detection (ZSAD) due to a critical adaptation gap: they lack the local inductive biases required for dense prediction and employ inflexible feature fusion paradigms.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Ke Ma , Jun Long , Hongxiao Fei , Liujie Hua , Zhen Dai , Yueyi Luo

Zero-Shot Video Anomaly Detection (ZS-VAD) requires temporally localizing anomalies without target domain training data, which is a crucial task due to various practical concerns, e.g., data privacy or new surveillance deployments.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-30 Canhui Tang , Sanping Zhou , Haoyue Shi , Le Wang

Zero-shot anomaly detection (ZSAD) has gained increasing attention in medical imaging as a way to identify abnormalities without task-specific supervision, but most advances remain limited to 2D datasets. Extending ZSAD to 3D medical images…

Computer Vision and Pattern Recognition · Computer Science 2026-02-18 Tai Le-Gia , Jaehyun Ahn

Temporal action detection (TAD) involves the localization and classification of action instances within untrimmed videos. While standard TAD follows fully supervised learning with closed-set setting on large training data, recent zero-shot…

Computer Vision and Pattern Recognition · Computer Science 2023-11-08 Thinh Phan , Khoa Vo , Duy Le , Gianfranco Doretto , Donald Adjeroh , Ngan Le

Most cross-domain unsupervised Video Anomaly Detection (VAD) works assume that at least few task-relevant target domain training data are available for adaptation from the source to the target domain. However, this requires laborious…

Computer Vision and Pattern Recognition · Computer Science 2022-12-15 Abhishek Aich , Kuan-Chuan Peng , Amit K. Roy-Chowdhury

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

Image Anomaly Detection has been a challenging task in Computer Vision field. The advent of Vision-Language models, particularly the rise of CLIP-based frameworks, has opened new avenues for zero-shot anomaly detection. Recent studies have…

Computer Vision and Pattern Recognition · Computer Science 2024-05-09 Zhaoxiang Zhang , Hanqiu Deng , Jinan Bao , Xingyu Li

Unsupervised visual anomaly detection from multi-view images presents a significant challenge: distinguishing genuine defects from benign appearance variations caused by viewpoint changes. Existing methods, often designed for single-view…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Xintao Chen , Xiaohao Xu , Bozhong Zheng , Yun Liu , Yingna Wu

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…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Chenhao Fu , Han Fang , Xiuzheng Zheng , Wenbo Wei , Yonghua Li , Hao Sun , Xuelong Li

Large vision-language models (LVLMs) are markedly proficient in deriving visual representations guided by natural language. Recent explorations have utilized LVLMs to tackle zero-shot visual anomaly detection (VAD) challenges by pairing…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Jiaqi Zhu , Shaofeng Cai , Fang Deng , Beng Chin Ooi , Junran Wu

Semantic segmentation networks have achieved significant success under the assumption of independent and identically distributed data. However, these networks often struggle to detect anomalies from unknown semantic classes due to the…

Computer Vision and Pattern Recognition · Computer Science 2024-09-27 Liangyu Zhong , Joachim Sicking , Fabian Hüger , Hanno Gottschalk

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

Few-shot anomaly detection (FSAD) has emerged as a crucial yet challenging task in industrial inspection, where normal distribution modeling must be accomplished with only a few normal images. While existing approaches typically employ…

Computer Vision and Pattern Recognition · Computer Science 2025-05-09 Qishan Wang , Jia Guo , Shuyong Gao , Haofen Wang , Li Xiong , Junjie Hu , Hanqi Guo , Wenqiang Zhang

Zero-shot 3D anomaly detection aims to identify anomalies without access to training data from target categories. However, existing methods mainly rely on projecting 3D observations into multi-view representations that primarily capture…

Computer Vision and Pattern Recognition · Computer Science 2026-05-08 Letian Bai , Xuanming Cao , Juan Du , Chengyu Tao

Zero-shot (ZS) 3D anomaly detection is a crucial yet unexplored field that addresses scenarios where target 3D training samples are unavailable due to practical concerns like privacy protection. This paper introduces PointAD, a novel…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Qihang Zhou , Jiangtao Yan , Shibo He , Wenchao Meng , Jiming Chen

Video anomaly detection (VAD) aims to temporally locate abnormal events in a video. Existing works mostly rely on training deep models to learn the distribution of normality with either video-level supervision, one-class supervision, or in…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Luca Zanella , Willi Menapace , Massimiliano Mancini , Yiming Wang , Elisa Ricci

Zero-shot anomaly detection (ZSAD) offers potential for identifying anomalies in medical imaging without task-specific training. In this paper, we evaluate CLIP-based models, originally developed for industrial tasks, on brain tumor…

Computer Vision and Pattern Recognition · Computer Science 2024-11-15 Aldo Marzullo , Marta Bianca Maria Ranzini