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From a safety perspective, a machine learning method embedded in real-world applications is required to distinguish irregular situations. For this reason, there has been a growing interest in the anomaly detection (AD) task. Since we cannot…

Machine Learning · Computer Science 2021-04-21 JuneKyu Park , Jeong-Hyeon Moon , Namhyuk Ahn , Kyung-Ah Sohn

Autonomous robotic systems applied to new domains require an abundance of expensive, pixel-level dense labels to train robust semantic segmentation models under full supervision. This study proposes a model-agnostic Depth Edge Alignment…

Computer Vision and Pattern Recognition · Computer Science 2026-01-16 Patrick Schmidt , Vasileios Belagiannis , Lazaros Nalpantidis

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

Industrial anomaly detection (IAD) plays a crucial role in the maintenance and quality control of manufacturing processes. In this paper, we propose a novel approach, Vision-Language Anomaly Detection via Contrastive Cross-Modal Training…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Kun Qian , Tianyu Sun , Wenhong Wang

AI-assisted surgeries have drawn the attention of the medical image research community due to their real-world impact on improving surgery success rates. For image-guided surgeries, such as Cochlear Implants (CIs), accurate object…

Image and Video Processing · Electrical Eng. & Systems 2023-02-17 Yike Zhang , Jack Noble

Semantic segmentation models, while effective for in-distribution categories, face challenges in real-world deployment due to encountering out-of-distribution (OoD) objects. Detecting these OoD objects is crucial for safety-critical…

Computer Vision and Pattern Recognition · Computer Science 2024-03-29 Wenjie Zhao , Jia Li , Xin Dong , Yu Xiang , Yunhui Guo

Image-based 3D detection is an indispensable component of the perception system for autonomous driving. However, it still suffers from the unsatisfying performance, one of the main reasons for which is the limited training data.…

Computer Vision and Pattern Recognition · Computer Science 2022-08-16 Xinzhu Ma , Yuan Meng , Yinmin Zhang , Lei Bai , Jun Hou , Shuai Yi , Wanli Ouyang

Although mainstream unsupervised anomaly detection (AD) algorithms perform well in academic datasets, their performance is limited in practical application due to the ideal experimental setting of clean training data. Training with noisy…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Xi Jiang , Ying Chen , Qiang Nie , Yong Liu , Jianlin Liu , Bin-Bin Gao , Jun Liu , Chengjie Wang , Feng Zheng

High-quality pixel-level annotations are essential for the semantic segmentation of remote sensing imagery. However, such labels are expensive to obtain and often affected by noise due to the labor-intensive and time-consuming nature of…

Zero-shot anomaly detection (ZSAD) targets the identification of anomalies within images from arbitrary novel categories. This study introduces AdaCLIP for the ZSAD task, leveraging a pre-trained vision-language model (VLM), CLIP. AdaCLIP…

Computer Vision and Pattern Recognition · Computer Science 2025-02-17 Yunkang Cao , Jiangning Zhang , Luca Frittoli , Yuqi Cheng , Weiming Shen , Giacomo Boracchi

Medical anomaly detection is a crucial yet challenging task aimed at recognizing abnormal images to assist in diagnosis. Due to the high-cost annotations of abnormal images, most methods utilize only known normal images during training and…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Yu Cai , Hao Chen , Xin Yang , Yu Zhou , Kwang-Ting Cheng

Automatic International Classification of Diseases (ICD) coding is defined as a kind of text multi-label classification problem, which is difficult because the number of labels is very large and the distribution of labels is unbalanced. The…

Computation and Language · Computer Science 2021-06-21 Yifan Wu , Min Zeng , Ying Yu , Min Li

In the domain of anomaly detection, methods often excel in either high-level semantic or low-level industrial benchmarks, rarely achieving cross-domain proficiency. Semantic anomalies are novelties that differ in meaning from the training…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Luc P. J. Sträter , Mohammadreza Salehi , Efstratios Gavves , Cees G. M. Snoek , Yuki M. Asano

Large unlabeled data and difficult-to-identify anomalies are the urgent issues need to overcome in most industrial scene. In order to address this issue, a new meth-odology for detecting surface defects in in-dustrial settings is…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Junzhuo Chen , Shitong Kang

Anomaly detection (AD) aims at detecting abnormal samples that deviate from the expected normal patterns. Generally, it can be trained merely on normal data, without a requirement for abnormal samples, and thereby plays an important role in…

Computer Vision and Pattern Recognition · Computer Science 2025-02-20 Yu Cai , Weiwen Zhang , Hao Chen , Kwang-Ting Cheng

Conventional defect detection systems in Automated Fibre Placement (AFP) typically rely on end-to-end supervised learning, necessitating a substantial number of labelled defective samples for effective training. However, the scarcity of…

Computer Vision and Pattern Recognition · Computer Science 2024-03-07 Assef Ghamisi , Todd Charter , Li Ji , Maxime Rivard , Gil Lund , Homayoun Najjaran

State-of-the-art semantic or instance segmentation deep neural networks (DNNs) are usually trained on a closed set of semantic classes. As such, they are ill-equipped to handle previously-unseen objects. However, detecting and localizing…

Computer Vision and Pattern Recognition · Computer Science 2021-11-10 Robin Chan , Krzysztof Lis , Svenja Uhlemeyer , Hermann Blum , Sina Honari , Roland Siegwart , Pascal Fua , Mathieu Salzmann , Matthias Rottmann

The paper explores the industrial multimodal Anomaly Detection (AD) task, which exploits point clouds and RGB images to localize anomalies. We introduce a novel light and fast framework that learns to map features from one modality to the…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Alex Costanzino , Pierluigi Zama Ramirez , Giuseppe Lisanti , Luigi Di Stefano

Multi-class Unsupervised Anomaly Detection algorithms (MUAD) are receiving increasing attention due to their relatively low deployment costs and improved training efficiency. However, the real-world effectiveness of MUAD methods is…

Computer Vision and Pattern Recognition · Computer Science 2025-04-18 Qishan Wang , Shuyong Gao , Junjie Hu , Jiawen Yu , Xuan Tong , You Li , Wenqiang Zhang

Anomaly detection methods have demonstrated remarkable success across various applications. However, assessing their performance, particularly at the pixel-level, presents a complex challenge due to the severe imbalance that is most…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Mehdi Rafiei , Toby P. Breckon , Alexandros Iosifidis