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Automatic detection of visual anomalies and changes in the environment has been a topic of recurrent attention in the fields of machine learning and computer vision over the past decades. A visual anomaly or change detection algorithm…

计算机视觉与模式识别 · 计算机科学 2022-09-07 Sahar Salimpour , Jorge Peña Queralta , Tomi Westerlund

In the anomaly detection field, the scarcity of anomalous samples has directed the current research emphasis towards unsupervised anomaly detection. While these unsupervised anomaly detection methods offer convenience, they also overlook…

信息检索 · 计算机科学 2023-11-15 Shunfeng Wang , Yueyang Li , Haichi Luo , Chenyang Bi

Unsupervised learning on 3D point clouds has undergone a rapid evolution, especially thanks to data augmentation-based contrastive methods. However, data augmentation is not ideal as it requires a careful selection of the type of…

计算机视觉与模式识别 · 计算机科学 2022-10-07 Guofeng Mei , Cristiano Saltori , Fabio Poiesi , Jian Zhang , Elisa Ricci , Nicu Sebe , Qiang Wu

Cross-category anomaly detection for 3D point clouds aims to determine whether an unseen object belongs to a target category using only a few normal examples. Most existing methods rely on category-specific training, which limits their…

计算机视觉与模式识别 · 计算机科学 2026-02-12 Zi Wang , Katsuya Hotta , Koichiro Kamide , Yawen Zou , Jianjian Qin , Chao Zhang , Jun Yu

3D anomaly detection in point-cloud data is critical for industrial quality control, aiming to identify structural defects with high reliability. However, current memory bank-based methods often suffer from inconsistent feature…

计算机视觉与模式识别 · 计算机科学 2025-10-21 Yuyang Yu , Zhengwei Chen , Xuemiao Xu , Lei Zhang , Haoxin Yang , Yongwei Nie , Shengfeng He

Anomaly detection in images plays a significant role for many applications across all industries, such as disease diagnosis in healthcare or quality assurance in manufacturing. Manual inspection of images, when extended over a monotonously…

计算机视觉与模式识别 · 计算机科学 2021-07-21 Vincent Wilmet , Sauraj Verma , Tabea Redl , Håkon Sandaker , Zhenning Li

Reconstruction-based methods have demonstrated very promising results for 3D anomaly detection. However, these methods face great challenges in handling high-precision point clouds due to the large scale and complex structure. In this…

计算机视觉与模式识别 · 计算机科学 2025-09-17 Hanzhe Liang , Jie Zhang , Tao Dai , Linlin Shen , Jinbao Wang , Can Gao

Self-supervised learning has emerged as a prominent research direction in point cloud processing. While existing models predominantly concentrate on reconstruction tasks at higher encoder layers, they often neglect the effective utilization…

图形学 · 计算机科学 2025-07-08 Xin Cao , Haoyu Wang , Yuzhu Mao , Xinda Liu , Linzhi Su , Kang Li

Deep learning for tabular data has garnered increasing attention in recent years, yet employing deep models for structured data remains challenging. While these models excel with unstructured data, their efficacy with structured data has…

机器学习 · 计算机科学 2024-07-23 Hugo Thimonier , Fabrice Popineau , Arpad Rimmel , Bich-Liên Doan

3D anomaly detection targets the detection and localization of defects in 3D point clouds trained solely on normal data. While a unified model improves scalability by learning across multiple categories, it often suffers from Inter-Category…

计算机视觉与模式识别 · 计算机科学 2026-03-27 SuYeon Kim , Wongyu Lee , MyeongAh Cho

Continuous efforts are being made to advance anomaly detection in various manufacturing processes to increase the productivity and safety of industrial sites. Deep learning replaced rule-based methods and recently emerged as a promising…

机器学习 · 计算机科学 2024-06-28 Kukjin Choi , Jihun Yi , Jisoo Mok , Sungroh Yoon

Learning to generate 3D point clouds without 3D supervision is an important but challenging problem. Current solutions leverage various differentiable renderers to project the generated 3D point clouds onto a 2D image plane, and train deep…

计算机视觉与模式识别 · 计算机科学 2021-08-10 Chen Chao , Zhizhong Han , Yu-Shen Liu , Matthias Zwicker

Anomaly detecting as an important technical in cloud computing is applied to support smooth running of the cloud platform. Traditional detecting methods based on statistic, analysis, etc. lead to the high false-alarm rate due to…

机器学习 · 计算机科学 2019-01-29 Jing Zhang

Semi-supervised anomaly detection for sensor signals is critical in ensuring system reliability in smart manufacturing. However, existing methods rely heavily on data correlation, neglecting causality and leading to potential…

机器学习 · 计算机科学 2024-05-17 Xiangwei Chen , Ruliang Xiaoa , Zhixia Zeng , Zhipeng Qiu , Shi Zhang , Xin Du

Though a number of point cloud learning methods have been proposed to handle unordered points, most of them are supervised and require labels for training. By contrast, unsupervised learning of point cloud data has received much less…

计算机视觉与模式识别 · 计算机科学 2023-01-25 Jincen Jiang , Xuequan Lu , Wanli Ouyang , Meili Wang

Recent self-supervised learning approaches focus on using a few thousand data points to learn policies for high-level, low-dimensional action spaces. However, scaling this framework for high-dimensional control require either scaling up the…

机器人学 · 计算机科学 2018-02-14 Adithyavairavan Murali , Lerrel Pinto , Dhiraj Gandhi , Abhinav Gupta

Online unsupervised detection of anomalies is crucial to guarantee the correct operation of cyber-physical systems and the safety of humans interacting with them. State-of-the-art approaches based on deep learning via neural networks…

机器学习 · 计算机科学 2024-07-30 Daniele Meli

High-precision point cloud anomaly detection is the gold standard for identifying the defects of advancing machining and precision manufacturing. Despite some methodological advances in this area, the scarcity of datasets and the lack of a…

计算机视觉与模式识别 · 计算机科学 2023-10-24 Jiaqi Liu , Guoyang Xie , Ruitao Chen , Xinpeng Li , Jinbao Wang , Yong Liu , Chengjie Wang , Feng Zheng

High-resolution point clouds~(HRPCD) anomaly detection~(AD) plays a critical role in precision machining and high-end equipment manufacturing. Despite considerable 3D-AD methods that have been proposed recently, they still cannot meet the…

计算机视觉与模式识别 · 计算机科学 2024-12-19 Hongze Zhu , Guoyang Xie , Chengbin Hou , Tao Dai , Can Gao , Jinbao Wang , Linlin Shen

We introduce a novel framework for Continual Learning in 3D object classification. Our approach, CL3D, is based on the selection of prototypes from each class using spectral clustering. For non-Euclidean data such as point clouds, spectral…

计算机视觉与模式识别 · 计算机科学 2025-03-07 Hossein Resani , Behrooz Nasihatkon , Mohammadreza Alimoradi Jazi