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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

In industrial anomaly detection (IAD), accurately identifying defects amidst diverse anomalies and under varying imaging conditions remains a significant challenge. Traditional approaches often struggle with high false-positive rates,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Yurui Pan , Lidong Wang , Yuchao Chen , Wenbing Zhu , Bo Peng , Mingmin Chi

Adapting CLIP for anomaly detection on unseen objects has shown strong potential in a zero-shot manner. However, existing methods typically rely on a single textual space to align with visual semantics across diverse objects and domains.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Qihang Zhou , Binbin Gao , Guansong Pang , Xin Wang , Jiming Chen , Shibo He

Recently, vision-language models (e.g. CLIP) have demonstrated remarkable performance in zero-shot anomaly detection (ZSAD). By leveraging auxiliary data during training, these models can directly perform cross-category anomaly detection on…

Computer Vision and Pattern Recognition · Computer Science 2025-06-04 Zhen Qu , Xian Tao , Xinyi Gong , Shichen Qu , Qiyu Chen , Zhengtao Zhang , Xingang Wang , Guiguang Ding

Universal visual anomaly detection aims to identify anomalies from novel or unseen vision domains without additional fine-tuning, which is critical in open scenarios. Recent studies have demonstrated that pre-trained vision-language models…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Bin-Bin Gao , Yue Zhou , Jiangtao Yan , Yuezhi Cai , Weixi Zhang , Meng Wang , Jun Liu , Yong Liu , Lei Wang , Chengjie Wang

Recently, large vision and language models have shown their success when adapting them to many downstream tasks. In this paper, we present a unified framework named CLIP-ADA for Anomaly Detection by Adapting a pre-trained CLIP model. To…

Computer Vision and Pattern Recognition · Computer Science 2024-03-15 Yuxuan Cai , Xinwei He , Dingkang Liang , Ao Tong , Xiang Bai

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

This paper considers zero-shot Anomaly Detection (AD), performing AD without reference images of the test objects. We propose a framework called CLIP-AD to leverage the zero-shot capabilities of the large vision-language model CLIP.…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Xuhai Chen , Jiangning Zhang , Guanzhong Tian , Haoyang He , Wuhao Zhang , Yabiao Wang , Chengjie Wang , Yong Liu

Visual anomaly classification and segmentation are vital for automating industrial quality inspection. The focus of prior research in the field has been on training custom models for each quality inspection task, which requires…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Jongheon Jeong , Yang Zou , Taewan Kim , Dongqing Zhang , Avinash Ravichandran , Onkar Dabeer

Current zero-shot anomaly detection (ZSAD) methods show remarkable success in prompting large pre-trained vision-language models to detect anomalies in a target dataset without using any dataset-specific training or demonstration. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-10-06 Jiawen Zhu , Yew-Soon Ong , Chunhua Shen , Guansong Pang

Zero-Shot Anomaly Detection (ZSAD) seeks to identify anomalies from arbitrary novel categories, offering a scalable and annotation-efficient solution. Traditionally, most ZSAD works have been based on the CLIP model, which performs anomaly…

Computer Vision and Pattern Recognition · Computer Science 2025-09-19 Jingyi Yuan , Jianxiong Ye , Wenkang Chen , Chenqiang Gao

Vision-language models have recently shown strong generalization in zero-shot anomaly detection (ZSAD), enabling the detection of unseen anomalies without task-specific supervision. However, existing approaches typically rely on fixed…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Peng Chen , Chao Huang

Recent advancements in large-scale visual-language pre-trained models have led to significant progress in zero-/few-shot anomaly detection within natural image domains. However, the substantial domain divergence between natural and medical…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 Chaoqin Huang , Aofan Jiang , Jinghao Feng , Ya Zhang , Xinchao Wang , Yanfeng Wang

Zero-shot anomaly detection (ZSAD) recognizes and localizes anomalies in previously unseen objects by establishing feature mapping between textual prompts and inspection images, demonstrating excellent research value in flexible industrial…

Computer Vision and Pattern Recognition · Computer Science 2026-04-02 Huilin Deng , Hongchen Luo , Wei Zhai , Yang Cao , Yu 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

Fine-grained anomaly detection is crucial in industrial and medical applications, but labeled anomalies are often scarce, making zero-shot detection challenging. While vision-language models like CLIP offer promising solutions, they…

Computer Vision and Pattern Recognition · Computer Science 2026-03-23 Ming Hu , Yongsheng Huo , Mingyu Dou , Jianfu Yin , Peng Zhao , Yao Wang , Cong Hu , Bingliang Hu , Quan Wang

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

Contrastive Language-Image Pre-training (CLIP) models have shown promising performance on zero-shot visual recognition tasks by learning visual representations under natural language supervision. Recent studies attempt the use of CLIP to…

Computer Vision and Pattern Recognition · Computer Science 2024-02-28 Hanqiu Deng , Zhaoxiang Zhang , Jinan Bao , Xingyu Li

In the field of medical decision-making, precise anomaly detection in medical imaging plays a pivotal role in aiding clinicians. However, previous work is reliant on large-scale datasets for training anomaly detection models, which…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Ximiao Zhang , Min Xu , Dehui Qiu , Ruixin Yan , Ning Lang , Xiuzhuang Zhou

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