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The surface quality inspection of manufacturing parts based on 3D point cloud data has attracted increasing attention in recent years. The reason is that the 3D point cloud can capture the entire surface of manufacturing parts, unlike the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-12 Xuanming Cao , Chengyu Tao , Juan Du

Point clouds provide a compact and efficient representation of 3D shapes. While deep neural networks have achieved impressive results on point cloud learning tasks, they require massive amounts of manually labeled data, which can be costly…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Omid Poursaeed , Tianxing Jiang , Han Qiao , Nayun Xu , Vladimir G. Kim

Computer-aided diagnosis for low-dose computed tomography (CT) based on deep learning has recently attracted attention as a first-line automatic testing tool because of its high accuracy and low radiation exposure. However, existing methods…

Image and Video Processing · Electrical Eng. & Systems 2022-06-28 Kyung-Su Kim , Seong Je Oh , Ju Hwan Lee , Myung Jin Chung

Unsupervised anomaly detection (UAD) learns one-class classifiers exclusively with normal (i.e., healthy) images to detect any abnormal (i.e., unhealthy) samples that do not conform to the expected normal patterns. UAD has two main…

Computer Vision and Pattern Recognition · Computer Science 2021-07-01 Yu Tian , Guansong Pang , Fengbei Liu , Yuanhong chen , Seon Ho Shin , Johan W. Verjans , Rajvinder Singh , Gustavo Carneiro

Anomaly detection is important in many real-life applications. Recently, self-supervised learning has greatly helped deep anomaly detection by recognizing several geometric transformations. However these methods lack finer features, usually…

Computer Vision and Pattern Recognition · Computer Science 2022-12-12 Loic Jezequel , Ngoc-Son Vu , Jean Beaudet , Aymeric Histace

Anomaly detection is a long-standing challenge in manufacturing systems. Traditionally, anomaly detection has relied on human inspectors. However, 3D point clouds have gained attention due to their robustness to environmental factors and…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Jiayu Liu , Shancong Mou , Nathan Gaw , Yinan Wang

Diffusion models are rapidly redefining 3D anomaly detection in point cloud data. As 3D sensing becomes integral to modern manufacturing, reliable anomaly detection is essential for high-throughput quality assurance and process control. Yet…

Computer Vision and Pattern Recognition · Computer Science 2026-05-08 Pranav A , Shashank B , Pranav Siddappa , Dominik Seuss , Minal Moharir , Subramanya KN

For anomaly detection (AD), early approaches often train separate models for individual classes, yielding high performance but posing challenges in scalability and resource management. Recent efforts have shifted toward training a single…

Computer Vision and Pattern Recognition · Computer Science 2025-07-18 Lei Fan , Junjie Huang , Donglin Di , Anyang Su , Tianyou Song , Maurice Pagnucco , Yang Song

Point clouds provide a flexible and natural representation usable in countless applications such as robotics or self-driving cars. Recently, deep neural networks operating on raw point cloud data have shown promising results on supervised…

Machine Learning · Computer Science 2019-06-04 Jonathan Sauder , Bjarne Sievers

Anomaly Detection is a relevant problem that arises in numerous real-world applications, especially when dealing with images. However, there has been little research for this task in the Continual Learning setting. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2024-09-09 Davide Dalle Pezze , Eugenia Anello , Chiara Masiero , Gian Antonio Susto

Purpose: Paranasal anomalies, frequently identified in routine radiological screenings, exhibit diverse morphological characteristics. Due to the diversity of anomalies, supervised learning methods require large labelled dataset exhibiting…

Adapting deep learning networks for point cloud data recognition in self-driving vehicles faces challenges due to the variability in datasets and sensor technologies, emphasizing the need for adaptive techniques to maintain accuracy across…

Computer Vision and Pattern Recognition · Computer Science 2024-10-23 Younggun Kim , Beomsik Cho , Seonghoon Ryoo , Soomok Lee

Does the intrinsic curvature of complex networks hold the key to unveiling graph anomalies that conventional approaches overlook? Reconstruction-based graph anomaly detection (GAD) methods overlook such geometric outliers, focusing only on…

Machine Learning · Computer Science 2025-06-06 Karish Grover , Geoffrey J. Gordon , Christos Faloutsos

3D anomaly detection plays a crucial role in monitoring parts for localized inherent defects in precision manufacturing. Embedding-based and reconstruction-based approaches are among the most popular and successful methods. However, there…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Zheyuan Zhou , Le Wang , Naiyu Fang , Zili Wang , Lemiao Qiu , Shuyou Zhang

Surface anomaly detection using 3D point cloud data has gained increasing attention in industrial inspection. However, most existing methods rely on deep learning techniques that are highly dependent on large-scale datasets for training,…

Applications · Statistics 2026-01-15 Guodong Xu , Juan Du , Hui Yang

This paper introduces a novel self-supervised learning framework for enhancing 3D perception in autonomous driving scenes. Specifically, our approach, namely NCLR, focuses on 2D-3D neural calibration, a novel pretext task that estimates the…

Computer Vision and Pattern Recognition · Computer Science 2025-08-21 Yifan Zhang , Junhui Hou , Siyu Ren , Jinjian Wu , Yixuan Yuan , Guangming Shi

Anomaly detection on attributed networks attracts considerable research interests due to wide applications of attributed networks in modeling a wide range of complex systems. Recently, the deep learning-based anomaly detection methods have…

Machine Learning · Computer Science 2021-05-07 Yixin Liu , Zhao Li , Shirui Pan , Chen Gong , Chuan Zhou , George Karypis

Using deep learning techniques, anomalies in the paranasal sinus system can be detected automatically in MRI images and can be further analyzed and classified based on their volume, shape and other parameters like local contrast. However…

Video Anomaly Detection (VAD) remains a fundamental yet formidable task in the video understanding community, with promising applications in areas such as information forensics and public safety protection. Due to the rarity and diversity…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Yang Liu , Hongjin Wang , Zepu Wang , Xiaoguang Zhu , Jing Liu , Peng Sun , Rui Tang , Jianwei Du , Victor C. M. Leung , Liang Song

Robust 3D perception under corruption has become an essential task for the realm of 3D vision. While current data augmentation techniques usually perform random transformations on all point cloud objects in an offline way and ignore the…

Computer Vision and Pattern Recognition · Computer Science 2023-09-20 Jie Wang , Lihe Ding , Tingfa Xu , Shaocong Dong , Xinli Xu , Long Bai , Jianan Li