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Textured meshes are becoming an increasingly popular representation combining the 3D geometry and radiometry of real scenes. However, semantic segmentation algorithms for urban mesh have been little investigated and do not exploit all…

Computer Vision and Pattern Recognition · Computer Science 2023-02-22 Grégoire Grzeczkowicz , Bruno Vallet

Visual control policies can encounter significant performance degradation when visual conditions like lighting or camera position differ from those seen during training -- often exhibiting sharp declines in capability even for minor…

Robotics · Computer Science 2024-04-30 Skand Peri , Iain Lee , Chanho Kim , Li Fuxin , Tucker Hermans , Stefan Lee

Three-dimensional (3D) fingerprint recognition and identification offer several advantages over traditional two-dimensional (2D) recognition systems. The contactless nature of 3D fingerprints enhances hygiene and security, reducing the risk…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Mohammad Mogharen Askarin , Jiankun Hu , Min Wang , Xuefei Yin , Xiuping Jia

Fillet welding is one of the most widespread types of welding in the industry, which is still carried out manually or automated by contact. This paper aims to describe an online programming system for noncontact fillet welding robots with U…

Conventional manual surveys of rock mass fractures usually require large amounts of time and labor; yet, they provide a relatively small set of data that cannot be considered representative of the study region. Terrestrial laser scanners…

Computer Vision and Pattern Recognition · Computer Science 2017-07-19 Xin Wang , Lejun Zou , Xiaohua Shen , Yupeng Ren , Yi Qin

While point-based neural architectures have demonstrated their efficacy, the time-consuming sampler currently prevents them from performing real-time reasoning on scene-level point clouds. Existing methods attempt to overcome this issue by…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 Junyuan Ouyang , Xiao Liu , Haoyao Chen

The most important aim in tool path generation methods is to increase the machining efficiency by minimizing the total length of tool paths while the error is kept under a prescribed tolerance. This can be achieved by determining the moving…

Computational Geometry · Computer Science 2014-02-06 Márta Szilvási-Nagy , Gyula Mátyási , Szilvia Béla

In the efforts for safer roads, ensuring adequate vertical clearance above roadways is of great importance. Frequently, trees or other vegetation is growing above the roads, blocking the sight of traffic signs and lights and posing danger…

Computer Vision and Pattern Recognition · Computer Science 2024-02-29 Miriam Louise Carnot , Eric Peukert , Bogdan Franczyk

Reassembling 3D broken objects is a challenging task. A robust solution that generalizes well must deal with diverse patterns associated with different types of broken objects. We propose a method that tackles the pairwise assembly of 3D…

Computer Vision and Pattern Recognition · Computer Science 2023-06-06 Ali Alagrami , Luca Palmieri , Sinem Aslan , Marcello Pelillo , Sebastiano Vascon

Controlling hand exoskeletons for assisting impaired patients in grasping tasks is challenging because it is difficult to infer user intent. We hypothesize that majority of daily grasping tasks fall into a small set of categories or modes…

Robotics · Computer Science 2024-11-14 Jackson M. Steinkamp , Laura J. Brattain , Conor J. Walsh , Robert D. Howe

We present an improved approach for 3D object detection in point cloud data based on the Frustum PointNet (F-PointNet). Compared to the original F-PointNet, our newly proposed method considers the point neighborhood when computing point…

Computer Vision and Pattern Recognition · Computer Science 2023-01-12 Chengzhi Wu , Julius Pfrommer , Jürgen Beyerer , Kangning Li , Boris Neubert

This paper introduces a novel curve-based slicing method for generating planar layers with dynamically varying orientations in digital light processing (DLP) 3D printing. Our approach effectively addresses key challenges in DLP printing,…

Graphics · Computer Science 2025-09-03 Chengkai Dai , Tao Liu , Dezhao Guo , Binzhi Sun , Guoxin Fang , Yeung Yam , Charlie C. L. Wang

The development of 2D foundation models for image segmentation has been significantly advanced by the Segment Anything Model (SAM). However, achieving similar success in 3D models remains a challenge due to issues such as non-unified data…

Computer Vision and Pattern Recognition · Computer Science 2024-12-04 Yuchen Zhou , Jiayuan Gu , Tung Yen Chiang , Fanbo Xiang , Hao Su

Image processing techniques have huge impact on most fields of robotics and industrial automation. Real time methods are usually employed in complex automation tasks, assisting with decision making or directly guiding robots and machinery,…

Robotics · Computer Science 2023-07-13 Kristóf Takács , Renáta Nagyné Elek , Tamás Haidegger

Roof plane segmentation from airborne LiDAR point clouds is an important technology for 3D building model reconstruction. One of the key issues of plane segmentation is how to design powerful features that can exactly distinguish adjacent…

Computer Vision and Pattern Recognition · Computer Science 2024-10-04 Li Li , Qingqing Li , Guozheng Xu , Pengwei Zhou , Jingmin Tu , Jie Li , Mingming Li , Jian Yao

This paper presents a robust fine-tuning method designed for pre-trained 3D point cloud models, to enhance feature robustness in downstream fine-tuned models. We highlight the limitations of current fine-tuning methods and the challenges of…

Computer Vision and Pattern Recognition · Computer Science 2024-04-26 Zhibo Zhang , Ximing Yang , Weizhong Zhang , Cheng Jin

The points on the point clouds that can entirely outline the shape of the model are of critical importance, as they serve as the foundation for numerous point cloud processing tasks and are widely utilized in computer graphics and…

Computer Vision and Pattern Recognition · Computer Science 2026-04-23 Yuhe Zhang , Zhikun Tu , Zhi Li , Jian Gao , Bao Guo , Shunli Zhang

Rigid Point Cloud Registration (PCR) algorithms aim to estimate the 6-DOF relative motion between two point clouds, which is important in various fields, including autonomous driving. Recent years have seen a significant improvement in…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 Amnon Drory , Shai Avidan , Raja Giryes

Current 3D object detection methods are heavily influenced by 2D detectors. In order to leverage architectures in 2D detectors, they often convert 3D point clouds to regular grids (i.e., to voxel grids or to bird's eye view images), or rely…

Computer Vision and Pattern Recognition · Computer Science 2019-08-26 Charles R. Qi , Or Litany , Kaiming He , Leonidas J. Guibas

Estimation of differential geometric quantities in discrete 3D data representations is one of the crucial steps in the geometry processing pipeline. Specifically, estimating normals and sharp feature lines from raw point cloud helps improve…

Computer Vision and Pattern Recognition · Computer Science 2020-08-07 Albert Matveev , Alexey Artemov , Denis Zorin , Evgeny Burnaev
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