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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…

计算机视觉与模式识别 · 计算机科学 2018-11-16 Xinhai Liu , Zhizhong Han , Yu-Shen Liu , Matthias Zwicker

Collider data generation with machine learning has become increasingly popular in particle physics due to the high computational cost of conventional Monte Carlo simulations, particularly for future high-luminosity colliders. We propose a…

高能物理 - 实验 · 物理学 2024-08-12 Benno Käch , Isabell Melzer-Pellmann , Dirk Krücker

Point clouds obtained from 3D scans are typically sparse, irregular, and noisy, and required to be consolidated. In this paper, we present the first deep learning based edge-aware technique to facilitate the consolidation of point clouds.…

计算机视觉与模式识别 · 计算机科学 2018-07-18 Lequan Yu , Xianzhi Li , Chi-Wing Fu , Daniel Cohen-Or , Pheng-Ann Heng

We propose a generative model of unordered point sets, such as point clouds, in the form of an energy-based model, where the energy function is parameterized by an input-permutation-invariant bottom-up neural network. The energy function…

计算机视觉与模式识别 · 计算机科学 2021-04-08 Jianwen Xie , Yifei Xu , Zilong Zheng , Song-Chun Zhu , Ying Nian Wu

The present work proposes an inflow turbulence generation strategy using deep learning methods. This is achieved with the help of an autoencoder architecture with two different types of operational layers in the latent-space: a fully…

流体动力学 · 物理学 2019-10-16 Aakash Vijay Patil

For autonomous driving, radar sensors provide superior reliability regardless of weather conditions as well as a significantly high detection range. State-of-the-art algorithms for environment perception based on radar scans build up on…

计算机视觉与模式识别 · 计算机科学 2023-05-23 Marco Braun , Alessandro Cennamo , Markus Schoeler , Kevin Kollek , Anton Kummert

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…

计算机视觉与模式识别 · 计算机科学 2020-10-13 Mohammad Samiul Arshad , William J. Beksi

Joint communication and sensing (JC\&S) is emerging as a key component in 5G and 6G networks, enabling dynamic adaptation to environmental changes and enhancing contextual awareness for optimized communication. By leveraging real-time…

信号处理 · 电气工程与系统科学 2024-10-23 Tuomas Määttä , Sasan Sharifipour , Miguel Bordallo López , Constantino Álvarez Casado

In computer-aided design (CAD) community, the point cloud data is pervasively applied in reverse engineering, where the point cloud analysis plays an important role. While a large number of supervised learning methods have been proposed to…

计算机视觉与模式识别 · 计算机科学 2022-03-22 Cheng Zhang , Jian Shi , Xuan Deng , Zizhao Wu

Point clouds are rich geometric data structures, where their three dimensional structure offers an excellent domain for understanding the representation learning and generative modeling in 3D space. In this work, we aim to improve the…

计算机视觉与模式识别 · 计算机科学 2023-02-28 Lingjie Kong , Pankaj Rajak , Siamak Shakeri

The reconstruction of real-world surfaces is on high demand in various applications. Most existing reconstruction approaches apply 3D scanners for creating point clouds which are generally sparse and of low density. These points clouds will…

计算机视觉与模式识别 · 计算机科学 2021-03-01 Rajat Sharma , Tobias Schwandt , Christian Kunert , Steffen Urban , Wolfgang Broll

3D model generation from single 2D RGB images is a challenging and actively researched computer vision task. Various techniques using conventional network architectures have been proposed for the same. However, the body of research work is…

计算机视觉与模式识别 · 计算机科学 2021-06-30 Abdul Mueed Hafiz , Rouf Ul Alam Bhat , Shabir Ahmad Parah , M. Hassaballah

As 3D point clouds become the prevailing shape representation in computer vision, generating high-quality point clouds remains a challenging problem. Flow-based models have shown strong potential due to exact likelihood estimation and…

信号处理 · 电气工程与系统科学 2026-03-31 Linhao Wang , Qichang Zhang , Yifan Yang , Ye Su , Hao Wang

Generative systems have a significant potential to synthesize innovative design alternatives. Still, most of the common systems that have been adopted in design require the designer to explicitly define the specifications of the procedures…

机器学习 · 计算机科学 2019-04-03 Ardavan Bidgoli , Pedro Veloso

Point clouds data, as one kind of representation of 3D objects, are the most primitive output obtained by 3D sensors. Unlike 2D images, point clouds are disordered and unstructured. Hence it is not straightforward to apply classification…

计算机视觉与模式识别 · 计算机科学 2019-06-03 Zhuyang Xie , Junzhou Chen , Bo Peng

Pre-training a model and then fine-tuning it on downstream tasks has demonstrated significant success in the 2D image and NLP domains. However, due to the unordered and non-uniform density characteristics of point clouds, it is non-trivial…

计算机视觉与模式识别 · 计算机科学 2023-11-28 Xiao Zheng , Xiaoshui Huang , Guofeng Mei , Yuenan Hou , Zhaoyang Lyu , Bo Dai , Wanli Ouyang , Yongshun Gong

Point cloud filtering is a fundamental problem in geometry modeling and processing. Despite of significant advancement in recent years, the existing methods still suffer from two issues: 1) they are either designed without preserving sharp…

图形学 · 计算机科学 2020-09-29 Dongbo Zhang , Xuequan Lu , Hong Qin , Ying He

In Wi-Fi systems, channel state information (CSI) plays a crucial role in enabling access points to execute beamforming operations. However, the feedback overhead associated with CSI significantly hampers the throughput improvements. Recent…

信号处理 · 电气工程与系统科学 2024-07-09 Fan Qi , Jiajia Guo , Yiming Cui , Xiangyi Li , Chao-Kai Wen , Shi Jin

Understanding point clouds is of great importance. Many previous methods focus on detecting salient keypoints to identity structures of point clouds. However, existing methods neglect the semantics of points selected, leading to poor…

计算机视觉与模式识别 · 计算机科学 2020-08-12 Ruoxi Shi , Zhengrong Xue , Xinyang Li

Transformer-based Self-supervised Representation Learning methods learn generic features from unlabeled datasets for providing useful network initialization parameters for downstream tasks. Recently, self-supervised learning based upon…

计算机视觉与模式识别 · 计算机科学 2023-09-12 Jincen Jiang , Xuequan Lu , Lizhi Zhao , Richard Dazeley , Meili Wang