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Anomaly detection plays a crucial role in quality control for industrial applications. However, ensuring robustness under unseen domain shifts such as lighting variations or sensor drift remains a significant challenge. Existing methods…

Computer Vision and Pattern Recognition · Computer Science 2025-03-20 Jingyi Liao , Xun Xu , Yongyi Su , Rong-Cheng Tu , Yifan Liu , Dacheng Tao , Xulei Yang

Learning rotation-invariant distinctive features is a fundamental requirement for point cloud registration. Existing methods often use rotation-sensitive networks to extract features, while employing rotation augmentation to learn an…

Computer Vision and Pattern Recognition · Computer Science 2024-11-01 Runzhao Yao , Shaoyi Du , Wenting Cui , Canhui Tang , Chengwu Yang

3D object detection from LiDAR data for autonomous driving has been making remarkable strides in recent years. Among the state-of-the-art methodologies, encoding point clouds into a bird's eye view (BEV) has been demonstrated to be both…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Yantao Lu , Xuetao Hao , Yilan Li , Weiheng Chai , Shiqi Sun , Senem Velipasalar

We present a new method for the unsupervised detection of geometric anomalies in high-resolution 3D point clouds. In particular, we propose an adaptation of the established student-teacher anomaly detection framework to three dimensions. A…

Computer Vision and Pattern Recognition · Computer Science 2022-02-24 Paul Bergmann , David Sattlegger

Current anomaly detection methods primarily focus on low-resolution scenarios. For high-resolution images, conventional downsampling often results in missed detections of subtle anomalous regions due to the loss of fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Ximiao Zhang , Min Xu , Xiuzhuang Zhou

Despite the remarkable success, recent reconstruction-based anomaly detection (AD) methods via diffusion modeling still involve fine-grained noise-strength tuning and computationally expensive multi-step denoising, leading to a fundamental…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Shunsuke Sakai , Xiangteng He , Chunzhi Gu , Leonid Sigal , Tatsuhito Hasegawa

Graph anomaly detection (GAD) has garnered increasing attention in recent years, yet remains challenging due to two key factors: (1) label scarcity stemming from the high cost of annotations and (2) homophily disparity at node and class…

Machine Learning · Computer Science 2026-01-30 Yunhui Liu , Jiashun Cheng , Yiqing Lin , Qizhuo Xie , Jia Li , Fugee Tsung , Hongzhi Yin , Tao Zheng , Jianhua Zhao , Tieke He

Generative models have demonstrated significant success in anomaly detection and segmentation over the past decade. Recently, diffusion models have emerged as a powerful alternative, outperforming previous approaches such as GANs and VAEs.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-22 Mehrdad Moradi , Marco Grasso , Bianca Maria Colosimo , Kamran Paynabar

Anomaly detection (AD) has been extensively studied and applied in a wide range of scenarios in the recent past. However, there are still gaps between achieved and desirable levels of recognition accuracy for making AD for practical…

Computer Vision and Pattern Recognition · Computer Science 2024-06-10 Peng Xing , Dong Zhang , Jinhui Tang , Zechao li

As a core step in structure-from-motion and SLAM, robust feature detection and description under challenging scenarios such as significant viewpoint changes remain unresolved despite their ubiquity. While recent works have identified the…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Gonglin Chen , Tianwen Fu , Haiwei Chen , Wenbin Teng , Hanyuan Xiao , Yajie Zhao

Object detection in optical remote sensing images is an important and challenging task. In recent years, the methods based on convolutional neural networks have made good progress. However, due to the large variation in object scale, aspect…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Qi Ming , Lingjuan Miao , Zhiqiang Zhou , Yunpeng Dong

Change detection from traditional \added{2D} optical images has limited capability to model the changes in the height or shape of objects. Change detection using 3D point cloud \added{from photogrammetry or LiDAR surveying} can fill this…

Image and Video Processing · Electrical Eng. & Systems 2024-10-28 Iris de Gélis , Sudipan Saha , Muhammad Shahzad , Thomas Corpetti , Sébastien Lefèvre , Xiao Xiang Zhu

Anomaly detection with only prior knowledge from normal samples attracts more attention because of the lack of anomaly samples. Existing CNN-based pixel reconstruction approaches suffer from two concerns. First, the reconstruction source…

Computer Vision and Pattern Recognition · Computer Science 2022-12-12 Zhiyuan You , Kai Yang , Wenhan Luo , Lei Cui , Yu Zheng , Xinyi Le

Ridge-valley features are important elements of point clouds, as they contain rich surface information. To recognize these features from point clouds, this paper introduces an extreme point distance (EPD) criterion with scale independence.…

Graphics · Computer Science 2019-10-14 Jianhui Nie , Zhaochen Zhang , Ye Liu , Hao Gao , Feng Xu , WenKai Shi

Anomaly Detection (AD) is a critical task that involves identifying observations that do not conform to a learned model of normality. Prior work in deep AD is predominantly based on a familiarity hypothesis, where familiar features serve as…

Machine Learning · Computer Science 2024-02-27 Sarath Sivaprasad , Mario Fritz

Anomaly detection from images captured using camera sensors is one of the mainstream applications at the industrial level. Particularly, it maintains the quality and optimizes the efficiency in production processes across diverse industrial…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Abdelrahman Alzarooni , Ehtesham Iqbal , Samee Ullah Khan , Sajid Javed , Brain Moyo , Yusra Abdulrahman

Rotated object detection aims to identify and locate objects in images with arbitrary orientation. In this scenario, the oriented directions of objects vary considerably across different images, while multiple orientations of objects exist…

Computer Vision and Pattern Recognition · Computer Science 2023-09-22 Yifan Pu , Yiru Wang , Zhuofan Xia , Yizeng Han , Yulin Wang , Weihao Gan , Zidong Wang , Shiji Song , Gao Huang

The convenience of 3D sensors has led to an increase in the use of 3D point clouds in various applications. However, the differences in acquisition devices or scenarios lead to divergence in the data distribution of point clouds, which…

Computer Vision and Pattern Recognition · Computer Science 2024-01-09 Zhimin Zhang , Xiang Gao , Wei Hu

Defect detection in the manufacturing industry is of utmost importance for product quality inspection. Recently, optical defect detection has been investigated as an anomaly detection using different deep learning methods. However, the…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Ammar Mansoor Kamoona , Amirali Khodadadian Gostar , Alireza Bab-Hadiashar , Reza Hoseinnezhad

Anomaly detection (AD) is a fundamental task in computer vision. It aims to identify incorrect image data patterns which deviate from the normal ones. Conventional methods generally address AD by preparing augmented negative samples to…

Computer Vision and Pattern Recognition · Computer Science 2023-12-01 Jianjian Qin , Chunzhi Gu , Jun Yu , Chao Zhang
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