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Graph convolutional networks (GCNs) update a node's feature vector by aggregating features from its neighbors in the graph. This ignores potentially useful contributions from distant nodes. Identifying such useful distant contributions is…

人工智能 · 计算机科学 2020-03-03 Hesham Mostafa , Marcel Nassar

Point cloud is a principal data structure adopted for 3D geometric information encoding. Unlike other conventional visual data, such as images and videos, these irregular points describe the complex shape features of 3D objects, which makes…

计算机视觉与模式识别 · 计算机科学 2020-04-21 Chaoyi Zhang , Yang Song , Lina Yao , Weidong Cai

Graph convolutional network (GCN) is an emerging neural network approach. It learns new representation of a node by aggregating feature vectors of all neighbors in the aggregation process without considering whether the neighbors or…

机器学习 · 计算机科学 2022-04-01 Li Zhang , Heda Song , Nikolaos Aletras , Haiping Lu

Adapting deep learning networks for point cloud data recognition in self-driving vehicles faces challenges due to the variability in datasets and sensor technologies, emphasizing the need for adaptive techniques to maintain accuracy across…

计算机视觉与模式识别 · 计算机科学 2024-10-23 Younggun Kim , Beomsik Cho , Seonghoon Ryoo , Soomok Lee

Large-scale point cloud consists of a multitude of individual objects, thereby encompassing rich structural and underlying semantic contextual information, resulting in a challenging problem in efficiently segmenting a point cloud. Most…

计算机视觉与模式识别 · 计算机科学 2024-06-18 Zhenchao Lin , Li He , Hongqiang Yang , Xiaoqun Sun , Cuojin Zhang , Weinan Chen , Yisheng Guan , Hong Zhang

Due to the sparsity and irregularity of the point cloud data, methods that directly consume points have become popular. Among all point-based models, graph convolutional networks (GCN) lead to notable performance by fully preserving the…

计算机视觉与模式识别 · 计算机科学 2021-04-14 Qiangeng Xu , Xudong Sun , Cho-Ying Wu , Panqu Wang , Ulrich Neumann

With the rapid development of 3D vision, point cloud has become an increasingly popular 3D visual media content. Due to the irregular structure, point cloud has posed novel challenges to the related research, such as compression,…

计算机视觉与模式识别 · 计算机科学 2023-06-02 Ziyu Shan , Qi Yang , Rui Ye , Yujie Zhang , Yiling Xu , Xiaozhong Xu , Shan Liu

We present a novel algorithm for point cloud segmentation. Our approach transforms unstructured point clouds into regular voxel grids, and further uses a kernel-based interpolated variational autoencoder (VAE) architecture to encode the…

图形学 · 计算机科学 2019-08-21 Hsien-Yu Meng , Lin Gao , YuKun Lai , Dinesh Manocha

The shift from Convolutional Neural Networks to Transformers has reshaped computer vision, yet these two architectural families are typically viewed as fundamentally distinct. We argue that convolution and self-attention, despite their…

计算机视觉与模式识别 · 计算机科学 2025-11-24 Mingi Kang , Jeová Farias Sales Rocha Neto

The decoupled Graph Convolutional Network (GCN), a recent development of GCN that decouples the neighborhood aggregation and feature transformation in each convolutional layer, has shown promising performance for graph representation…

机器学习 · 计算机科学 2022-11-16 Jinsong Chen , Boyu Li , Kun He

We present a novel and high-performance 3D object detection framework, named PointVoxel-RCNN (PV-RCNN), for accurate 3D object detection from point clouds. Our proposed method deeply integrates both 3D voxel Convolutional Neural Network…

计算机视觉与模式识别 · 计算机科学 2021-04-12 Shaoshuai Shi , Chaoxu Guo , Li Jiang , Zhe Wang , Jianping Shi , Xiaogang Wang , Hongsheng Li

In point cloud analysis, point-based methods have rapidly developed in recent years. These methods have recently focused on concise MLP structures, such as PointNeXt, which have demonstrated competitiveness with Convolutional and…

计算机视觉与模式识别 · 计算机科学 2023-03-29 Xin Deng , WenYu Zhang , Qing Ding , XinMing Zhang

Previous studies have demonstrated the effectiveness of point-based neural models on the point cloud analysis task. However, there remains a crucial issue on producing the efficient input embedding for raw point coordinates. Moreover,…

计算机视觉与模式识别 · 计算机科学 2024-07-15 Zihao Li , Pan Gao , Kang You , Chuan Yan , Manoranjan Paul

In recent years graph neural network (GNN)-based approaches have become a popular strategy for processing point cloud data, regularly achieving state-of-the-art performance on a variety of tasks. To date, the research community has…

计算机视觉与模式识别 · 计算机科学 2021-08-19 Shyam A. Tailor , René de Jong , Tiago Azevedo , Matthew Mattina , Partha Maji

Graph convolutional networks (GCNs) have been employed as a kind of significant tool on many graph-based applications recently. Inspired by convolutional neural networks (CNNs), GCNs generate the embeddings of nodes by aggregating the…

机器学习 · 计算机科学 2020-11-20 Tao Huang , Yihan Zhang , Jiajing Wu , Junyuan Fang , Zibin Zheng

3D object recognition has attracted wide research attention in the field of multimedia and computer vision. With the recent proliferation of deep learning, various deep models with different representations have achieved the…

计算机视觉与模式识别 · 计算机科学 2018-08-24 Haoxuan You , Yifan Feng , Rongrong Ji , Yue Gao

To read the final version please go to IEEE TGRS on IEEE Xplore. Convolutional neural networks (CNNs) have been attracting increasing attention in hyperspectral (HS) image classification, owing to their ability to capture spatial-spectral…

计算机视觉与模式识别 · 计算机科学 2021-07-07 Danfeng Hong , Lianru Gao , Jing Yao , Bing Zhang , Antonio Plaza , Jocelyn Chanussot

We present a new convolutional neural network, called Multi Voxel-Point Neurons Convolution (MVPConv), for fast and accurate 3D deep learning. The previous works adopt either individual point-based features or local-neighboring voxel-based…

计算机视觉与模式识别 · 计算机科学 2021-05-03 Wei Zhou , Xin Cao , Xiaodan Zhang , Xingxing Hao , Dekui Wang , Ying He

3D point cloud interpretation is a challenging task due to the randomness and sparsity of the component points. Many of the recently proposed methods like PointNet and PointCNN have been focusing on learning shape descriptions from point…

计算机视觉与模式识别 · 计算机科学 2021-07-28 Zhaoyu Su , Pin Siang Tan , Junkang Chow , Jimmy Wu , Yehur Cheong , Yu-Hsing Wang

We present the Versatile Grasp Quality Convolutional Neural Network (VGQ-CNN), a grasp quality prediction network for 6-DOF grasps. VGQ-CNN can be used when evaluating grasps for objects seen from a wide range of camera poses or mobile…

机器人学 · 计算机科学 2022-11-08 A. Konrad , J. McDonald , R. Villing