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Exploring contextual information in the local region is important for shape understanding and analysis. Existing studies often employ hand-crafted or explicit ways to encode contextual information of local regions. However, it is hard to…

Computer Vision and Pattern Recognition · Computer Science 2018-11-16 Xinhai Liu , Zhizhong Han , Yu-Shen Liu , Matthias Zwicker

How to represent a jet is at the core of machine learning on jet physics. Inspired by the notion of point clouds, we propose a new approach that considers a jet as an unordered set of its constituent particles, effectively a "particle…

High Energy Physics - Phenomenology · Physics 2020-03-31 Huilin Qu , Loukas Gouskos

This paper introduces Point-GN, a novel non-parametric network for efficient and accurate 3D point cloud classification. Unlike conventional deep learning models that rely on a large number of trainable parameters, Point-GN leverages…

Computer Vision and Pattern Recognition · Computer Science 2024-12-10 Marzieh Mohammadi , Amir Salarpour

We present 3DRegNet, a novel deep learning architecture for the registration of 3D scans. Given a set of 3D point correspondences, we build a deep neural network to address the following two challenges: (i) classification of the point…

Computer Vision and Pattern Recognition · Computer Science 2020-04-08 G. Dias Pais , Srikumar Ramalingam , Venu Madhav Govindu , Jacinto C. Nascimento , Rama Chellappa , Pedro Miraldo

Real-scanned point clouds are often incomplete due to viewpoint, occlusion, and noise. Existing point cloud completion methods tend to generate global shape skeletons and hence lack fine local details. Furthermore, they mostly learn a…

Computer Vision and Pattern Recognition · Computer Science 2021-04-21 Liang Pan , Xinyi Chen , Zhongang Cai , Junzhe Zhang , Haiyu Zhao , Shuai Yi , Ziwei Liu

Deep learning with 3D data such as reconstructed point clouds and CAD models has received great research interests recently. However, the capability of using point clouds with convolutional neural network has been so far not fully explored.…

Computer Vision and Pattern Recognition · Computer Science 2018-03-30 Binh-Son Hua , Minh-Khoi Tran , Sai-Kit Yeung

With the increased availability of 3D scanning technology, point clouds are moving into the focus of computer vision as a rich representation of everyday scenes. However, they are hard to handle for machine learning algorithms due to their…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Sergey Prokudin , Christoph Lassner , Javier Romero

Learning-based point cloud registration methods can handle clean point clouds well, while it is still challenging to generalize to noisy, partial, and density-varying point clouds. To this end, we propose a novel point cloud registration…

Computer Vision and Pattern Recognition · Computer Science 2024-01-12 Leida Zhang , Zhengda Lu , Kai Liu , Yiqun Wang

Predicting the future can significantly improve the safety of intelligent vehicles, which is a key component in autonomous driving. 3D point clouds accurately model 3D information of surrounding environment and are crucial for intelligent…

Computer Vision and Pattern Recognition · Computer Science 2020-11-24 Fan Lu , Guang Chen , Yinlong Liu , Zhijun Li , Sanqing Qu , Tianpei Zou

We tackle the problem of object completion from point clouds and propose a novel point cloud completion network employing an Asymmetrical Siamese Feature Matching strategy, termed as ASFM-Net. Specifically, the Siamese auto-encoder neural…

Computer Vision and Pattern Recognition · Computer Science 2021-08-05 Yaqi Xia , Yan Xia , Wei Li , Rui Song , Kailang Cao , Uwe Stilla

The ability to predict future structure features of environments based on past perception information is extremely needed by autonomous vehicles, which helps to make the following decision-making and path planning more reasonable. Recently,…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Zhen Luo , Junyi Ma , Zijie Zhou , Guangming Xiong

In this paper we propose a rotation-invariant deep network for point clouds analysis. Point-based deep networks are commonly designed to recognize roughly aligned 3D shapes based on point coordinates, but suffer from performance drops with…

Computer Vision and Pattern Recognition · Computer Science 2020-11-19 Ruixuan Yu , Xin Wei , Federico Tombari , Jian Sun

Self-attention mechanism recently achieves impressive advancement in Natural Language Processing (NLP) and Image Processing domains. And its permutation invariance property makes it ideally suitable for point cloud processing. Inspired by…

Computer Vision and Pattern Recognition · Computer Science 2021-04-28 Xian-Feng Han , Zhang-Yue He , Jia Chen , Guo-Qiang Xiao

3D point cloud registration is fragile to outliers, which are labeled as the points without corresponding points. To handle this problem, a widely adopted strategy is to estimate the relative pose based only on some accurate…

Computer Vision and Pattern Recognition · Computer Science 2022-03-25 Zhiyuan Zhang , Jiadai Sun , Yuchao Dai , Bin Fan , Mingyi He

Point clouds are a very efficient way to represent volumetric data in medical imaging. First, they do not occupy resources for empty spaces and therefore can avoid trade-offs between resolution and field-of-view for voxel-based 3D…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Mattias Paul Heinrich

Recently MLP-based methods have shown strong performance in point cloud analysis. Simple MLP architectures are able to learn geometric features in local point groups yet fail to model long-range dependencies directly. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2023-12-21 Xingyilang Yin , Xi Yang , Liangchen Liu , Nannan Wang , Xinbo Gao

The task of point cloud completion aims to predict the missing part for an incomplete 3D shape. A widely used strategy is to generate a complete point cloud from the incomplete one. However, the unordered nature of point clouds will degrade…

Computer Vision and Pattern Recognition · Computer Science 2021-06-15 Xin Wen , Peng Xiang , Zhizhong Han , Yan-Pei Cao , Pengfei Wan , Wen Zheng , Yu-Shen Liu

The purpose of intrinsic decomposition is to separate an image into its albedo (reflective properties) and shading components (illumination properties). This is challenging because it's an ill-posed problem. Conventional approaches…

Computer Vision and Pattern Recognition · Computer Science 2024-03-29 Xiaoyan Xing , Konrad Groh , Sezer Karaoglu , Theo Gevers

Recently, many deep neural networks were designed to process 3D point clouds, but a common drawback is that rotation invariance is not ensured, leading to poor generalization to arbitrary orientations. In this paper, we introduce a new…

Computer Vision and Pattern Recognition · Computer Science 2021-07-06 Xianzhi Li , Ruihui Li , Guangyong Chen , Chi-Wing Fu , Daniel Cohen-Or , Pheng-Ann Heng

Point cloud data have been widely explored due to its superior accuracy and robustness under various adverse situations. Meanwhile, deep neural networks (DNNs) have achieved very impressive success in various applications such as…

Computer Vision and Pattern Recognition · Computer Science 2023-04-04 Aoran Xiao , Jiaxing Huang , Dayan Guan , Xiaoqin Zhang , Shijian Lu , Ling Shao