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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…

计算机视觉与模式识别 · 计算机科学 2025-03-18 Jiacong Xu , Shao-Yuan Lo , Bardia Safaei , Vishal M. Patel , Isht Dwivedi

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…

计算机视觉与模式识别 · 计算机科学 2025-11-25 Xintao Chen , Xiaohao Xu , Bozhong Zheng , Yun Liu , Yingna Wu

Few-shot anomaly detection methods can effectively address data collecting difficulty in industrial scenarios. Compared to 2D few-shot anomaly detection (2D-FSAD), 3D few-shot anomaly detection (3D-FSAD) is still an unexplored but essential…

计算机视觉与模式识别 · 计算机科学 2024-06-28 Zuo Zuo , Jiahao Dong , Yao Wu , Yanyun Qu , Zongze Wu

Vision-language models (VLMs) struggle in open-world applications, where out-of-distribution (OOD) concepts often trigger cross-modal alignment collapse and severely degrade zero-shot performance. We identify the root cause as modal…

计算机视觉与模式识别 · 计算机科学 2025-12-23 Jensen Zhang , Ningyuan Liu , Keze Wang

With the increasing adoption of video anomaly detection in intelligent surveillance domains, conventional visual-based detection approaches often struggle with information insufficiency and high false-positive rates in complex environments.…

计算机视觉与模式识别 · 计算机科学 2025-06-03 Peng Wu , Wanshun Su , Guansong Pang , Yujia Sun , Qingsen Yan , Peng Wang , Yanning Zhang

Precise anomaly detection in medical images is critical for clinical decision-making. While recent unsupervised or semi-supervised anomaly detection methods trained on large-scale normal data show promising results, they lack fine-grained…

计算机视觉与模式识别 · 计算机科学 2025-08-12 Yue Zhou , Yuan Bi , Wenjuan Tong , Wei Wang , Nassir Navab , Zhongliang Jiang

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

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…

计算机视觉与模式识别 · 计算机科学 2026-05-08 Letian Bai , Xuanming Cao , Juan Du , Chengyu Tao

Zero-Shot image Anomaly Detection (ZSAD) aims to detect and localise anomalies without access to any normal training samples of the target data. While recent ZSAD approaches leverage additional modalities such as language to generate…

计算机视觉与模式识别 · 计算机科学 2026-01-14 Samet Hicsonmez , Abd El Rahman Shabayek , Djamila Aouada

Zero-shot anomaly detection (ZSAD) methods entail detecting anomalies directly without access to any known normal or abnormal samples within the target item categories. Existing approaches typically rely on the robust generalization…

计算机视觉与模式识别 · 计算机科学 2026-03-03 Zhaopeng Gu , Bingke Zhu , Guibo Zhu , Yingying Chen , Hao Li , Ming Tang , Jinqiao Wang

Compositional Zero-Shot Learning (CZSL) aims to recognize novel concepts formed by known states and objects during training. Existing methods either learn the combined state-object representation, challenging the generalization of unseen…

计算机视觉与模式识别 · 计算机科学 2022-11-22 Xiaocheng Lu , Ziming Liu , Song Guo , Jingcai Guo

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…

计算机视觉与模式识别 · 计算机科学 2024-03-20 Chaoqin Huang , Aofan Jiang , Jinghao Feng , Ya Zhang , Xinchao Wang , Yanfeng Wang

Anomaly detection identifies departures from expected behavior in safety-critical settings. When target-domain normal data are unavailable, zero-shot anomaly detection (ZSAD) leverages vision-language models (VLMs). However, CLIP's coarse…

计算机视觉与模式识别 · 计算机科学 2026-02-26 Alireza Salehi , Ehsan Karami , Sepehr Noey , Sahand Noey , Makoto Yamada , Reshad Hosseini , Mohammad Sabokrou

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…

计算机视觉与模式识别 · 计算机科学 2024-12-24 Qihang Zhou , Jiangtao Yan , Shibo He , Wenchao Meng , Jiming Chen

Recently, weakly supervised video anomaly detection (WS-VAD) has emerged as a contemporary research direction to identify anomaly events like violence and nudity in videos using only video-level labels. However, this task has substantial…

计算机视觉与模式识别 · 计算机科学 2024-12-31 Ayush Ghadiya , Purbayan Kar , Vishal Chudasama , Pankaj Wasnik

Vision-Language Models (VLMs) have demonstrated impressive multimodal capabilities in learning joint representations of visual and textual data, making them powerful tools for tasks such as Compositional Zero-Shot Learning (CZSL). CZSL…

计算机视觉与模式识别 · 计算机科学 2025-07-25 Kyle Stein , Arash Mahyari , Guillermo Francia , Eman El-Sheikh

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…

计算机视觉与模式识别 · 计算机科学 2024-05-09 Zhaoxiang Zhang , Hanqiu Deng , Jinan Bao , Xingyu Li

Video camouflaged object detection (VCOD) is challenging due to dynamic environments. Existing methods face two main issues: (1) SAM-based methods struggle to separate camouflaged object edges due to model freezing, and (2) MLLM-based…

计算机视觉与模式识别 · 计算机科学 2025-09-09 Hua Zhang , Changjiang Luo , Ruoyu Chen

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,…

计算机视觉与模式识别 · 计算机科学 2026-01-21 Mohit Kakda , Mirudula Shri Muthukumaran , Uttapreksha Patel , Lawrence Swaminathan Xavier Prince

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…

计算机视觉与模式识别 · 计算机科学 2025-04-08 Jiaqi Zhu , Shaofeng Cai , Fang Deng , Beng Chin Ooi , Junran Wu