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This paper addresses the problem of generating uniform dense point clouds to describe the underlying geometric structures from given sparse point clouds. Due to the irregular and unordered nature, point cloud densification as a generative…

Computer Vision and Pattern Recognition · Computer Science 2020-03-10 Yue Qian , Junhui Hou , Sam Kwong , Ying He

Point cloud analysis is an area of increasing interest due to the development of 3D sensors that are able to rapidly measure the depth of scenes accurately. Unfortunately, applying deep learning techniques to perform point cloud analysis is…

Computer Vision and Pattern Recognition · Computer Science 2021-01-05 Junming Zhang , Ming-Yuan Yu , Ram Vasudevan , Matthew Johnson-Roberson

Neural surfaces learning has shown impressive performance in multi-view surface reconstruction. However, most existing methods use large multilayer perceptrons (MLPs) to train their models from scratch, resulting in hours of training for a…

Computer Vision and Pattern Recognition · Computer Science 2023-12-20 Jianyao Xu , Qingshan Xu , Xinyao Liao , Wanjuan Su , Chen Zhang , Yew-Soon Ong , Wenbing Tao

Point cloud classification is a popular task in 3D vision. However, previous works, usually assume that point clouds at test time are obtained with the same procedure or sensor as those at training time. Unsupervised Domain Adaptation (UDA)…

Computer Vision and Pattern Recognition · Computer Science 2022-10-18 Adriano Cardace , Riccardo Spezialetti , Pierluigi Zama Ramirez , Samuele Salti , Luigi Di Stefano

Surface parameterization is a fundamental geometry processing problem with rich downstream applications. Traditional approaches are designed to operate on well-behaved mesh models with high-quality triangulations that are laboriously…

Computer Vision and Pattern Recognition · Computer Science 2024-03-18 Qijian Zhang , Junhui Hou , Ying He

State-of-the-art neural implicit surface representations have achieved impressive results in indoor scene reconstruction by incorporating monocular geometric priors as additional supervision. However, we have observed that multi-view…

Computer Vision and Pattern Recognition · Computer Science 2024-05-02 Ziyi Chen , Xiaolong Wu , Yu Zhang

Deep convolutional neural networks (CNNs) have delivered superior performance in many computer vision tasks. In this paper, we propose a novel deep fully convolutional network model for accurate salient object detection. The key…

Computer Vision and Pattern Recognition · Computer Science 2017-08-08 Pingping Zhang , Dong Wang , Huchuan Lu , Hongyu Wang , Baocai Yin

We present a novel method for reconstructing a 3D implicit surface from a large-scale, sparse, and noisy point cloud. Our approach builds upon the recently introduced Neural Kernel Fields (NKF) representation. It enjoys similar…

Computer Vision and Pattern Recognition · Computer Science 2023-06-12 Jiahui Huang , Zan Gojcic , Matan Atzmon , Or Litany , Sanja Fidler , Francis Williams

Point clouds are a fundamental 3D representation in computer vision, enabling a wide range of perception tasks. However, real-world point clouds often suffer from degradations such as incompleteness, noise, outliers, and irregular density,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Haoqing Wu , Alexa Nawotki , Jochen Garcke

We proposed a generalized method, NeuralSSD, for reconstructing a 3D implicit surface from the widely-available point cloud data. NeuralSSD is a solver-based on the neural Galerkin method, aimed at reconstructing higher-quality and accurate…

Computer Vision and Pattern Recognition · Computer Science 2025-11-19 Zi-Chen Xi , Jiahui Huang , Hao-Xiang Chen , Francis Williams , Qun-Ce Xu , Tai-Jiang Mu , Shi-Min Hu

Surface reconstruction is very challenging when the input point clouds, particularly real scans, are noisy and lack normals. Observing that the Multilayer Perceptron (MLP) and the implicit moving least-square function (IMLS) provide a dual…

Computer Vision and Pattern Recognition · Computer Science 2023-09-07 Zixiong Wang , Pengfei Wang , Pengshuai Wang , Qiujie Dong , Junjie Gao , Shuangmin Chen , Shiqing Xin , Changhe Tu , Wenping Wang

Point cloud completion seeks to recover geometrically consistent shapes from partial or sparse 3D observations. Although recent methods have achieved reasonable global shape reconstruction, they often rely on Euclidean proximity and…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Jianan Sun , Dongzhihan Wang , Mingyu Fan

As 3D point clouds become a cornerstone of modern technology, the need for sophisticated generative models and reliable evaluation metrics has grown exponentially. In this work, we first expose that some commonly used metrics for evaluating…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Matteo Bastico , David Ryckelynck , Laurent Corté , Yannick Tillier , Etienne Decencière

We explore a new idea for learning based shape reconstruction from a point cloud, based on the recently popularized implicit neural shape representations. We cast the problem as a few-shot learning of implicit neural signed distance…

Computer Vision and Pattern Recognition · Computer Science 2022-07-12 Amine Ouasfi , Adnane Boukhayma

Learning-based 3D reconstruction using implicit neural representations has shown promising progress not only at the object level but also in more complicated scenes. In this paper, we propose Dynamic Plane Convolutional Occupancy Networks,…

Computer Vision and Pattern Recognition · Computer Science 2020-11-12 Stefan Lionar , Daniil Emtsev , Dusan Svilarkovic , Songyou Peng

The paper presents a simple and effective learning-based method for computing a discriminative 3D point cloud descriptor for place recognition purposes. Recent state-of-the-art methods have relatively complex architectures such as…

Computer Vision and Pattern Recognition · Computer Science 2022-04-11 Jacek Komorowski

Recently, learning multi-view neural surface reconstruction with the supervision of point clouds or depth maps has been a promising way. However, due to the underutilization of prior information, current methods still struggle with the…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Chen Zhang , Wanjuan Su , Qingshan Xu , Wenbing Tao

Differentiable rendering is an essential operation in modern vision, allowing inverse graphics approaches to 3D understanding to be utilized in modern machine learning frameworks. Explicit shape representations (voxels, point clouds, or…

Computer Vision and Pattern Recognition · Computer Science 2021-12-13 Tristan Aumentado-Armstrong , Stavros Tsogkas , Sven Dickinson , Allan Jepson

Recent works on implicit neural representations have made significant strides. Learning implicit neural surfaces using volume rendering has gained popularity in multi-view reconstruction without 3D supervision. However, accurately…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Decai Chen , Peng Zhang , Ingo Feldmann , Oliver Schreer , Peter Eisert

Computational fluid dynamics (CFD) in many cases requires designing 3D models manually, which is a tedious task that requires specific skills. In this paper, we present a novel method for performing CFD directly on scanned 3D point clouds.…