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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

Point cloud data has been extensively studied due to its compact form and flexibility in representing complex 3D structures. The ability of point cloud data to accurately capture and represent intricate 3D geometry makes it an ideal choice…

Computer Vision and Pattern Recognition · Computer Science 2023-05-09 Ben Fei , Weidong Yang , Liwen Liu , Tianyue Luo , Rui Zhang , Yixuan Li , Ying He

The increased availability of massive point clouds coupled with their utility in a wide variety of applications such as robotics, shape synthesis, and self-driving cars has attracted increased attention from both industry and academia.…

Machine Learning · Computer Science 2020-09-30 Charu Sharma , Manohar Kaul

In this work, we propose to learn local descriptors for point clouds in a self-supervised manner. In each iteration of the training, the input of the network is merely one unlabeled point cloud. On top of our previous work, that directly…

Robotics · Computer Science 2020-03-12 Yijun Yuan , Jiawei Hou , Andreas Nüchter , Sören Schwertfeger

Recently, great progress has been made in 3D deep learning with the emergence of deep neural networks specifically designed for 3D point clouds. These networks are often trained from scratch or from pre-trained models learned purely from…

Computer Vision and Pattern Recognition · Computer Science 2022-10-31 Bach Tran , Binh-Son Hua , Anh Tuan Tran , Minh Hoai

Point cloud data have been widely explored due to its superior accuracy and robustness under various adverse situations. Meanwhile, deep neural networks (DNNs) have achieved very impressive success in various applications such as…

Computer Vision and Pattern Recognition · Computer Science 2023-04-04 Aoran Xiao , Jiaxing Huang , Dayan Guan , Xiaoqin Zhang , Shijian Lu , Ling Shao

Reducing the quantity of annotations required for supervised training is vital when labels are scarce and costly. This reduction is particularly important for semantic segmentation tasks involving 3D datasets, which are often significantly…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Andrej Janda , Brandon Wagstaff , Edwin G. Ng , Jonathan Kelly

Though a number of point cloud learning methods have been proposed to handle unordered points, most of them are supervised and require labels for training. By contrast, unsupervised learning of point cloud data has received much less…

Computer Vision and Pattern Recognition · Computer Science 2023-01-25 Jincen Jiang , Xuequan Lu , Wanli Ouyang , Meili Wang

3D point clouds are a crucial type of data collected by LiDAR sensors and widely used in transportation applications due to its concise descriptions and accurate localization. Deep neural networks (DNNs) have achieved remarkable success in…

Computer Vision and Pattern Recognition · Computer Science 2023-05-25 Changyu Zeng , Wei Wang , Anh Nguyen , Yutao Yue

Point cloud processing and 3D shape understanding are very challenging tasks for which deep learning techniques have demonstrated great potentials. Still further progresses are essential to allow artificial intelligent agents to interact…

Computer Vision and Pattern Recognition · Computer Science 2020-04-17 Antonio Alliegro , Davide Boscaini , Tatiana Tommasi

3D point cloud semantic segmentation is a challenging topic in the computer vision field. Most of the existing methods in literature require a large amount of fully labeled training data, but it is extremely time-consuming to obtain these…

Computer Vision and Pattern Recognition · Computer Science 2022-04-07 Shuang Deng , Qiulei Dong , Bo Liu , Zhanyi Hu

Point clouds upsampling is a challenging issue to generate dense and uniform point clouds from the given sparse input. Most existing methods either take the end-to-end supervised learning based manner, where large amounts of pairs of sparse…

Computer Vision and Pattern Recognition · Computer Science 2022-04-19 Wenbo Zhao , Xianming Liu , Zhiwei Zhong , Junjun Jiang , Wei Gao , Ge Li , Xiangyang Ji

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…

Computer Vision and Pattern Recognition · Computer Science 2022-03-22 Cheng Zhang , Jian Shi , Xuan Deng , Zizhao Wu

Contemporary deep neural networks offer state-of-the-art results when applied to visual reasoning, e.g., in the context of 3D point cloud data. Point clouds are important datatype for precise modeling of three-dimensional environments, but…

Machine Learning · Computer Science 2022-05-23 Maciej Zamorski , Michał Stypułkowski , Konrad Karanowski , Tomasz Trzciński , Maciej Zięba

Deep neural networks have achieved promising performance in supervised point cloud applications, but manual annotation is extremely expensive and time-consuming in supervised learning schemes. Unsupervised domain adaptation (UDA) addresses…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Xiaoyuan Luo , Shaolei Liu , Kexue Fu , Manning Wang , Zhijian Song

Unsupervised learning on 3D point clouds has undergone a rapid evolution, especially thanks to data augmentation-based contrastive methods. However, data augmentation is not ideal as it requires a careful selection of the type of…

Computer Vision and Pattern Recognition · Computer Science 2022-10-07 Guofeng Mei , Cristiano Saltori , Fabio Poiesi , Jian Zhang , Elisa Ricci , Nicu Sebe , Qiang Wu

Reducing the quantity of annotations required for supervised training is vital when labels are scarce and costly. This reduction is especially important for semantic segmentation tasks involving 3D datasets that are often significantly…

Computer Vision and Pattern Recognition · Computer Science 2022-12-20 Andrej Janda , Brandon Wagstaff , Edwin G. Ng , Jonathan Kelly

Pretraining on large labeled datasets is a prerequisite to achieve good performance in many computer vision tasks like 2D object recognition, video classification etc. However, pretraining is not widely used for 3D recognition tasks where…

Computer Vision and Pattern Recognition · Computer Science 2021-01-08 Zaiwei Zhang , Rohit Girdhar , Armand Joulin , Ishan Misra

Point clouds have attracted increasing attention. Significant progress has been made in methods for point cloud analysis, which often requires costly human annotation as supervision. To address this issue, we propose a novel…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Bi'an Du , Xiang Gao , Wei Hu , Xin Li

We present a novel approach to learning a point-wise, meaningful embedding for point-clouds in an unsupervised manner, through the use of neural-networks. The domain of point-cloud processing via neural-networks is rapidly evolving, with…

Graphics · Computer Science 2019-03-12 Matan Shoef , Sharon Fogel , Daniel Cohen-Or
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