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Despite the progress on 3D point cloud deep learning, most prior works focus on learning features that are invariant to translation and point permutation, and very limited efforts have been devoted for rotation invariant property. Several…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Zhiyuan Zhang , Licheng Yang , Zhiyu Xiang

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…

Computer Vision and Pattern Recognition · Computer Science 2024-10-23 Younggun Kim , Beomsik Cho , Seonghoon Ryoo , Soomok Lee

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…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Marco Braun , Alessandro Cennamo , Markus Schoeler , Kevin Kollek , Anton Kummert

Deep learning systems extensively use convolution operations to process input data. Though convolution is clearly defined for structured data such as 2D images or 3D volumes, this is not true for other data types such as sparse point…

Computer Vision and Pattern Recognition · Computer Science 2018-09-26 Pedro Hermosilla , Tobias Ritschel , Pere-Pau Vázquez , Àlvar Vinacua , Timo Ropinski

Automatic synthesis of high quality 3D shapes is an ongoing and challenging area of research. While several data-driven methods have been proposed that make use of neural networks to generate 3D shapes, none of them reach the level of…

Computer Vision and Pattern Recognition · Computer Science 2019-06-28 Isaak Lim , Moritz Ibing , Leif Kobbelt

Point clouds are the native output of many real-world 3D sensors. To borrow the success of 2D convolutional network architectures, a majority of popular 3D perception models voxelize the points, which can result in a loss of local geometric…

Computer Vision and Pattern Recognition · Computer Science 2019-07-31 Yuwen Xiong , Mengye Ren , Renjie Liao , Kelvin Wong , Raquel Urtasun

We present an approach to semantic scene analysis using deep convolutional networks. Our approach is based on tangent convolutions - a new construction for convolutional networks on 3D data. In contrast to volumetric approaches, our method…

Computer Vision and Pattern Recognition · Computer Science 2018-07-09 Maxim Tatarchenko , Jaesik Park , Vladlen Koltun , Qian-Yi Zhou

Although accurate and fast point cloud classification is a fundamental task in 3D applications, it is difficult to achieve this purpose due to the irregularity and disorder of point clouds that make it challenging to achieve effective and…

Computer Vision and Pattern Recognition · Computer Science 2022-03-03 Dening Lu , Qian Xie , Linlin Xu , Jonathan Li

Deep learning with 3D data has progressed significantly since the introduction of convolutional neural networks that can handle point order ambiguity in point cloud data. While being able to achieve good accuracies in various scene…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Zhiyuan Zhang , Binh-Son Hua , Sai-Kit Yeung

Learning from 3D point-cloud data has rapidly gained momentum, motivated by the success of deep learning on images and the increased availability of 3D~data. In this paper, we aim to construct anisotropic convolution layers that work…

Computer Vision and Pattern Recognition · Computer Science 2022-05-16 Ruben Wiersma , Ahmad Nasikun , Elmar Eisemann , Klaus Hildebrandt

Transformer plays an increasingly important role in various computer vision areas and remarkable achievements have also been made in point cloud analysis. Since they mainly focus on point-wise transformer, an adaptive channel encoding…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Guoquan Xu , Hezhi Cao , Yifan Zhang , Yanxin Ma , Jianwei Wan , Ke Xu

Recently, deep neural networks have made remarkable achievements in 3D point cloud classification. However, existing classification methods are mainly implemented on idealized point clouds and suffer heavy degradation of per-formance on…

Computer Vision and Pattern Recognition · Computer Science 2022-05-06 Guoquan Xu , Hezhi Cao , Yifan Zhang , Jianwei Wan , Ke Xu , Yanxin Ma

Exploiting convolutional neural networks for point cloud processing is quite challenging, due to the inherent irregular distribution and discrete shape representation of point clouds. To address these problems, many handcrafted convolution…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Xing Nie , Yongcheng Liu , Shaohong Chen , Jianlong Chang , Chunlei Huo , Gaofeng Meng , Qi Tian , Weiming Hu , Chunhong Pan

Recently, various convolutions based on continuous or discrete kernels for point cloud processing have been widely studied, and achieve impressive performance in many applications, such as shape classification, scene segmentation and so on.…

Computer Vision and Pattern Recognition · Computer Science 2021-04-06 Dengsheng Chen , Haowen Deng , Jun Li , Duo Li , Yao Duan , Kai Xu

Point cloud processing methods exploit local point features and global context through aggregation which does not explicity model the internal correlations between local and global features. To address this problem, we propose full point…

Computer Vision and Pattern Recognition · Computer Science 2023-03-09 Yong He , Hongshan Yu , Zhengeng Yang , Xiaoyan Liu , Wei Sun , Ajmal Mian

The existing 3D deep learning methods adopt either individual point-based features or local-neighboring voxel-based features, and demonstrate great potential for processing 3D data. However, the point based models are inefficient due to the…

Computer Vision and Pattern Recognition · Computer Science 2021-07-29 Wei Zhou , Xin Cao , Xiaodan Zhang , Xingxing Hao , Dekui Wang , Ying He

We present a new versatile building block for deep point cloud processing architectures that is equally suited for diverse tasks. This building block combines the ideas of spatial transformers and multi-view convolutional networks with the…

Computer Vision and Pattern Recognition · Computer Science 2021-10-05 Kirill Mazur , Victor Lempitsky

We introduce FPConv, a novel surface-style convolution operator designed for 3D point cloud analysis. Unlike previous methods, FPConv doesn't require transforming to intermediate representation like 3D grid or graph and directly works on…

Computer Vision and Pattern Recognition · Computer Science 2020-03-17 Yiqun Lin , Zizheng Yan , Haibin Huang , Dong Du , Ligang Liu , Shuguang Cui , Xiaoguang Han

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

We present a Multimodal Interlaced Transformer (MIT) that jointly considers 2D and 3D data for weakly supervised point cloud segmentation. Research studies have shown that 2D and 3D features are complementary for point cloud segmentation.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Cheng-Kun Yang , Min-Hung Chen , Yung-Yu Chuang , Yen-Yu Lin