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Three-dimensional geometric data offer an excellent domain for studying representation learning and generative modeling. In this paper, we look at geometric data represented as point clouds. We introduce a deep AutoEncoder (AE) network with…

Computer Vision and Pattern Recognition · Computer Science 2018-06-13 Panos Achlioptas , Olga Diamanti , Ioannis Mitliagkas , Leonidas Guibas

In this paper, we introduce a novel conditional generative adversarial network that creates dense 3D point clouds, with color, for assorted classes of objects in an unsupervised manner. To overcome the difficulty of capturing intricate…

Computer Vision and Pattern Recognition · Computer Science 2020-10-13 Mohammad Samiul Arshad , William J. Beksi

We study the problem of generating point clouds of 3D objects. Instead of discretizing the object into 3D voxels with huge computational cost and resolution limitations, we propose a novel geometry image based generator (GIG) to convert the…

Computer Vision and Pattern Recognition · Computer Science 2020-12-01 Lei Wang , Yuchun Huang , Pengjie Tao , Yaolin Hou , Yuxuan Liu

We propose a method to generate 3D shapes using point clouds. Given a point-cloud representation of a 3D shape, our method builds a kd-tree to spatially partition the points. This orders them consistently across all shapes, resulting in…

Computer Vision and Pattern Recognition · Computer Science 2017-07-21 Matheus Gadelha , Subhransu Maji , Rui Wang

Generative Adversarial Networks (GANs) have emerged as a significant player in generative modeling by mapping lower-dimensional random noise to higher-dimensional spaces. These networks have been used to generate high-resolution images and…

Computer Vision and Pattern Recognition · Computer Science 2023-04-11 Satya Pratheek Tata , Subhankar Mishra

As 3D point clouds become the representation of choice for multiple vision and graphics applications, the ability to synthesize or reconstruct high-resolution, high-fidelity point clouds becomes crucial. Despite the recent success of deep…

Computer Vision and Pattern Recognition · Computer Science 2019-09-04 Guandao Yang , Xun Huang , Zekun Hao , Ming-Yu Liu , Serge Belongie , Bharath Hariharan

Generating realistic 3D faces is of high importance for computer graphics and computer vision applications. Generally, research on 3D face generation revolves around linear statistical models of the facial surface. Nevertheless, these…

Computer Vision and Pattern Recognition · Computer Science 2022-03-28 Baris Gecer , Alexander Lattas , Stylianos Ploumpis , Jiankang Deng , Athanasios Papaioannou , Stylianos Moschoglou , Stefanos Zafeiriou

Point cloud is a critical 3D representation with many emerging applications. Because of the point sparsity and irregularity, high-quality rendering of point clouds is challenging and often requires complex computations to recover the…

Computer Vision and Pattern Recognition · Computer Science 2024-09-26 Yueyu Hu , Ran Gong , Qi Sun , Yao Wang

We present the first approach for 3D point-cloud to image translation based on conditional Generative Adversarial Networks (cGAN). The model handles multi-modal information sources from different domains, i.e. raw point-sets and images. The…

Computer Vision and Pattern Recognition · Computer Science 2019-09-17 Stefan Milz , Martin Simon , Kai Fischer , Maximillian Pöpperl

In the recent years, the research community has witnessed growing use of 3D point cloud data for the high applicability in various real-world applications. By means of 3D point cloud, this modality enables to consider the actual size and…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Daichi Otsuka , Shinichi Mae , Ryosuke Yamada , Hirokatsu Kataoka

With the vast data-collecting capabilities of current and future high-energy collider experiments, there is an increasing demand for computationally efficient simulations. Generative machine learning models enable fast event generation, yet…

High Energy Physics - Phenomenology · Physics 2023-10-04 Erik Buhmann , Gregor Kasieczka , Jesse Thaler

A generative model for high-fidelity point clouds is of great importance in synthesizing 3d environments for applications such as autonomous driving and robotics. Despite the recent success of deep generative models for 2d images, it is…

Computer Vision and Pattern Recognition · Computer Science 2023-07-25 Cheng Wen , Baosheng Yu , Rao Fu , Dacheng Tao

Accurate and efficient point cloud registration is a challenge because the noise and a large number of points impact the correspondence search. This challenge is still a remaining research problem since most of the existing methods rely on…

Computer Vision and Pattern Recognition · Computer Science 2021-11-24 Xiaoshui Huang , Zongyi Xu , Guofeng Mei , Sheng Li , Jian Zhang , Yifan Zuo , Yucheng Wang

In this work, we propose a novel method for generating 3D point clouds that leverage properties of hyper networks. Contrary to the existing methods that learn only the representation of a 3D object, our approach simultaneously finds a…

Computer Vision and Pattern Recognition · Computer Science 2020-12-04 Przemysław Spurek , Sebastian Winczowski , Jacek Tabor , Maciej Zamorski , Maciej Zięba , Tomasz Trzciński

Generative Adversarial Networks (GANs) have gained significant attention in several computer vision tasks for generating high-quality synthetic data. Various medical applications including diagnostic imaging and radiation therapy can…

Image and Video Processing · Electrical Eng. & Systems 2022-07-25 Sanaz Mohammadjafari , Mucahit Cevik , Ayse Basar

Deep neural networks are known to be vulnerable to adversarial examples which are carefully crafted instances to cause the models to make wrong predictions. While adversarial examples for 2D images and CNNs have been extensively studied,…

Cryptography and Security · Computer Science 2019-07-15 Chong Xiang , Charles R. Qi , Bo Li

Learning-based methods have proven successful in compressing geometric information for point clouds. For attribute compression, however, they still lag behind non-learning-based methods such as the MPEG G-PCC standard. To bridge this gap,…

Image and Video Processing · Electrical Eng. & Systems 2024-07-22 Xiaolong Mao , Hui Yuan , Xin Lu , Raouf Hamzaoui , Wei Gao

In the field of computer vision, unsupervised learning for 2D object generation has advanced rapidly in the past few years. However, 3D object generation has not garnered the same attention or success as its predecessor. To facilitate novel…

Computer Vision and Pattern Recognition · Computer Science 2020-07-29 Devendra K. Jangid , Neal R. Brodnik , Amil Khan , McLean P. Echlin , Tresa M. Pollock , Sam Daly , B. S. Manjunath

In this work, we propose a novel technique to generate shapes from point cloud data. A point cloud can be viewed as samples from a distribution of 3D points whose density is concentrated near the surface of the shape. Point cloud generation…

Computer Vision and Pattern Recognition · Computer Science 2020-08-19 Ruojin Cai , Guandao Yang , Hadar Averbuch-Elor , Zekun Hao , Serge Belongie , Noah Snavely , Bharath Hariharan

Limited by the computational efficiency and accuracy, generating complex 3D scenes remains a challenging problem for existing generation networks. In this work, we propose DepthGAN, a novel method of generating depth maps with only semantic…

Computer Vision and Pattern Recognition · Computer Science 2022-03-23 Yidi Li , Yiqun Wang , Zhengda Lu , Jun Xiao