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Reconstructing a continuous surface from an unoritented 3D point cloud is a fundamental task in 3D shape processing. In recent years, several methods have been proposed to address this problem using implicit neural representations (INRs).…

Computer Vision and Pattern Recognition · Computer Science 2023-11-07 Ryutaro Yamauchi , Jinya Sakurai , Ryo Furukawa , Tatsushi Matsubayashi

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

This paper presents Point Convolutional Neural Networks (PCNN): a novel framework for applying convolutional neural networks to point clouds. The framework consists of two operators: extension and restriction, mapping point cloud functions…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Matan Atzmon , Haggai Maron , Yaron Lipman

Recent advances in deep learning for 3D point clouds have shown great promises in scene understanding tasks thanks to the introduction of convolution operators to consume 3D point clouds directly in a neural network. Point cloud data,…

Computer Vision and Pattern Recognition · Computer Science 2020-08-10 Zhiyuan Zhang , Binh-Son Hua , Wei Chen , Yibin Tian , Sai-Kit Yeung

We present a new deep point cloud rendering pipeline through multi-plane projections. The input to the network is the raw point cloud of a scene and the output are image or image sequences from a novel view or along a novel camera…

Computer Vision and Pattern Recognition · Computer Science 2020-06-26 Peng Dai , Yinda Zhang , Zhuwen Li , Shuaicheng Liu , Bing Zeng

Point clouds are an increasingly relevant data type but they are often corrupted by noise. We propose a deep neural network based on graph-convolutional layers that can elegantly deal with the permutation-invariance problem encountered by…

Computer Vision and Pattern Recognition · Computer Science 2020-07-07 Francesca Pistilli , Giulia Fracastoro , Diego Valsesia , Enrico Magli

In the field of autonomous driving and robotics, point clouds are showing their excellent real-time performance as raw data from most of the mainstream 3D sensors. Therefore, point cloud neural networks have become a popular research…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Hanxiao Tan

Processing large point clouds is a challenging task. Therefore, the data is often downsampled to a smaller size such that it can be stored, transmitted and processed more efficiently without incurring significant performance degradation.…

Computer Vision and Pattern Recognition · Computer Science 2022-10-12 Yang Ye , Xiulong Yang , Shihao Ji

Driven by the appealing properties of neural fields for storing and communicating 3D data, the problem of directly processing them to address tasks such as classification and part segmentation has emerged and has been investigated in recent…

Computer Vision and Pattern Recognition · Computer Science 2024-01-31 Adriano Cardace , Pierluigi Zama Ramirez , Francesco Ballerini , Allan Zhou , Samuele Salti , Luigi Di Stefano

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

Point cloud completion has become increasingly popular among generation tasks of 3D point clouds, as it is a challenging yet indispensable problem to recover the complete shape of a 3D object from its partial observation. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 Haoran Zhou , Yun Cao , Wenqing Chu , Junwei Zhu , Tong Lu , Ying Tai , Chengjie Wang

We introduce 3DShape2VecSet, a novel shape representation for neural fields designed for generative diffusion models. Our shape representation can encode 3D shapes given as surface models or point clouds, and represents them as neural…

Computer Vision and Pattern Recognition · Computer Science 2023-05-03 Biao Zhang , Jiapeng Tang , Matthias Niessner , Peter Wonka

Dense colored point clouds enhance visual perception and are of significant value in various robotic applications. However, existing learning-based point cloud upsampling methods are constrained by computational resources and batch…

Robotics · Computer Science 2024-09-04 Zixuan Guo , Yifan Xie , Weijing Xie , Peng Huang , Fei Ma , Fei Richard Yu

LiDAR sensors are an integral part of modern autonomous vehicles as they provide an accurate, high-resolution 3D representation of the vehicle's surroundings. However, it is computationally difficult to make use of the ever-increasing…

Computer Vision and Pattern Recognition · Computer Science 2023-05-16 Marc Uecker , Tobias Fleck , Marcel Pflugfelder , J. Marius Zöllner

3D point cloud generation by the deep neural network from a single image has been attracting more and more researchers' attention. However, recently-proposed methods require the objects be captured with relatively clean backgrounds, fixed…

Computer Vision and Pattern Recognition · Computer Science 2018-09-11 Yan Xia , Yang Zhang , Dingfu Zhou , Xinyu Huang , Cheng Wang , Ruigang Yang

We introduce a new approach for reconstruction and novel view synthesis of unbounded real-world scenes. In contrast to previous methods using either volumetric fields, grid-based models, or discrete point cloud proxies, we propose a hybrid…

Computer Vision and Pattern Recognition · Computer Science 2025-03-12 Florian Hahlbohm , Linus Franke , Moritz Kappel , Susana Castillo , Martin Eisemann , Marc Stamminger , Marcus Magnor

The irregularity and permutation invariance of point cloud data pose challenges for effective learning. Conventional methods for addressing this issue involve converting raw point clouds to intermediate representations such as 3D voxel…

Computer Vision and Pattern Recognition · Computer Science 2023-06-29 Athrva Atul Pandhare

Point cloud completion is a fundamental yet not well-solved problem in 3D vision. Current approaches often rely on 3D coordinate information and/or additional data (e.g., images and scanning viewpoints) to fill in missing parts. Unlike…

Computer Vision and Pattern Recognition · Computer Science 2025-02-27 Zhe Zhu , Honghua Chen , Xing He , Mingqiang Wei

Normal estimation on 3D point clouds is a fundamental problem in 3D vision and graphics. Current methods often show limited accuracy in predicting normals at sharp features (e.g., edges and corners) and less robustness to noise. In this…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Weijia Wang , Xuequan Lu , Dasith de Silva Edirimuni , Xiao Liu , Antonio Robles-Kelly

Three-dimensional (3D) reconstruction of trees has always been a key task in precision forestry management and research. Due to the complex branch morphological structure of trees themselves and the occlusions from tree stems, branches and…

Computer Vision and Pattern Recognition · Computer Science 2023-12-07 Hongyu Huang , Guoji Tian , Chongcheng Chen