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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,…

Computer Vision and Pattern Recognition · Computer Science 2023-06-02 Ziyu Shan , Qi Yang , Rui Ye , Yujie Zhang , Yiling Xu , Xiaozhong Xu , Shan Liu

A reliable perception has to be robust against challenging environmental conditions. Therefore, recent efforts focused on the use of radar sensors in addition to camera and lidar sensors for perception applications. However, the sparsity of…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Felix Fent , Philipp Bauerschmidt , Markus Lienkamp

The irregular domain and lack of ordering make it challenging to design deep neural networks for point cloud processing. This paper presents a novel framework named Point Cloud Transformer(PCT) for point cloud learning. PCT is based on…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Meng-Hao Guo , Jun-Xiong Cai , Zheng-Ning Liu , Tai-Jiang Mu , Ralph R. Martin , Shi-Min Hu

Rigid registration of partial observations is a fundamental problem in various applied fields. In computer graphics, special attention has been given to the registration between two partial point clouds generated by scanning devices.…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Zihao Yan , Zimu Yi , Ruizhen Hu , Niloy J. Mitra , Daniel Cohen-Or , Hui Huang

The irregularity and permutation invariance of point cloud data pose challenges for effective learning. Conventional methods for addressing this issue involve converting raw point clouds to intermediate representations such as 3D voxel…

Computer Vision and Pattern Recognition · Computer Science 2023-06-29 Athrva Atul Pandhare

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

Point cloud recognition is an essential task in industrial robotics and autonomous driving. Recently, several point cloud processing models have achieved state-of-the-art performances. However, these methods lack rotation robustness, and…

Computer Vision and Pattern Recognition · Computer Science 2021-12-30 Dongrui Liu , Chuanchuan Chen , Changqing Xu , Qi Cai , Lei Chu , Fei Wen , Robert Caiming Qiu

Recently, there has been a significant interest in performing convolution over irregularly sampled point clouds. Since point clouds are very different from regular raster images, it is imperative to study the generalization of the…

Computer Vision and Pattern Recognition · Computer Science 2021-02-01 Xingyi Li , Wenxuan Wu , Xiaoli Z. Fern , Li Fuxin

View-dependent effects such as reflections pose a substantial challenge for image-based and neural rendering algorithms. Above all, curved reflectors are particularly hard, as they lead to highly non-linear reflection flows as the camera…

Graphics · Computer Science 2023-01-04 Georgios Kopanas , Thomas Leimkühler , Gilles Rainer , Clément Jambon , George Drettakis

Point clouds collected by real-world sensors are always unaligned and sparse, which makes it hard to reconstruct the complete shape of object from a single frame of data. In this work, we manage to provide complete point clouds from sparse…

Computer Vision and Pattern Recognition · Computer Science 2022-02-08 Jieqi Shi , Lingyun Xu , Peiliang Li , Xiaozhi Chen , Shaojie Shen

Many applications require the robustness, or ideally the invariance, of a neural network to certain transformations of input data. Most commonly, this requirement is addressed by either augmenting the training data, using adversarial…

Computer Vision and Pattern Recognition · Computer Science 2021-06-21 Kanchana Vaishnavi Gandikota , Jonas Geiping , Zorah Lähner , Adam Czapliński , Michael Moeller

Radar perception models are trained with different inputs, from range-Doppler spectra to sparse point clouds. Dense spectra are assumed to outperform sparse point clouds, yet they can vary considerably across sensors and configurations,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Hamza Alsharif , Jing Gu , Pavol Jancura , Satish Ravindran , Gijs Dubbelman

Point clouds provide a compact and efficient representation of 3D shapes. While deep neural networks have achieved impressive results on point cloud learning tasks, they require massive amounts of manually labeled data, which can be costly…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Omid Poursaeed , Tianxing Jiang , Han Qiao , Nayun Xu , Vladimir G. Kim

This paper proposes a novel point-cloud-based place recognition system that adopts a deep learning approach for feature extraction. By using a convolutional neural network pre-trained on color images to extract features from a range image…

Computer Vision and Pattern Recognition · Computer Science 2018-10-24 Ting Sun , Ming Liu , Haoyang Ye , Dit-Yan Yeung

Machine learning for point clouds has been attracting much attention, with many applications in various fields, such as shape recognition and material science. For enhancing the accuracy of such machine learning methods, it is often…

Machine Learning · Computer Science 2023-12-29 Naoki Nishikawa , Yuichi Ike , Kenji Yamanishi

3D anomaly detection in point-cloud data is critical for industrial quality control, aiming to identify structural defects with high reliability. However, current memory bank-based methods often suffer from inconsistent feature…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Yuyang Yu , Zhengwei Chen , Xuemiao Xu , Lei Zhang , Haoxin Yang , Yongwei Nie , Shengfeng He

In this paper, we present IRON (Invariant-based global Robust estimation and OptimizatioN), a non-minimal and highly robust solution for point cloud registration with a great number of outliers among the correspondences. To realize this, we…

Computer Vision and Pattern Recognition · Computer Science 2021-04-21 Lei Sun

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

With the development of 3D sensing technologies, point clouds have attracted increasing attention in a variety of applications for 3D object representation, such as autonomous driving, 3D immersive tele-presence and heritage reconstruction.…

Computer Vision and Pattern Recognition · Computer Science 2019-01-01 Junkun Qi , Wei Hu , Zongming Guo

As 3D scanning devices and depth sensors mature, point clouds have attracted increasing attention as a format for 3D object representation, with applications in various fields such as tele-presence, navigation and heritage reconstruction.…

Computer Vision and Pattern Recognition · Computer Science 2018-10-10 Zeqing Fu , Wei Hu , Zongming Guo