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In many vision and robotics applications, it is common that the captured objects are represented by very few points. Most of the existing completion methods are designed for partial point clouds with many points, and they perform poorly or…

计算机视觉与模式识别 · 计算机科学 2022-11-24 Xianfeng Wu , Jinhui Qian , Qing Wei , Xianzu Wu , Xinyi Liu , Luxin Hu , Yanli Gong , Zhongyuan Lai , Libing Wu

3D object detection from LiDAR point cloud is a challenging problem in 3D scene understanding and has many practical applications. In this paper, we extend our preliminary work PointRCNN to a novel and strong point-cloud-based 3D object…

计算机视觉与模式识别 · 计算机科学 2020-03-17 Shaoshuai Shi , Zhe Wang , Jianping Shi , Xiaogang Wang , Hongsheng Li

Data augmentation is an effective regularization strategy for mitigating overfitting in deep neural networks, and it plays a crucial role in 3D vision tasks, where the point cloud data is relatively limited. While mixing-based augmentation…

计算机视觉与模式识别 · 计算机科学 2023-03-14 Yi Wang , Jiaze Wang , Jinpeng Li , Zixu Zhao , Guangyong Chen , Anfeng Liu , Pheng-Ann Heng

3D point cloud is an important 3D representation for capturing real world 3D objects. However, real-scanned 3D point clouds are often incomplete, and it is important to recover complete point clouds for downstream applications. Most…

计算机视觉与模式识别 · 计算机科学 2022-03-22 Zhaoyang Lyu , Zhifeng Kong , Xudong Xu , Liang Pan , Dahua Lin

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.…

计算机视觉与模式识别 · 计算机科学 2019-01-01 Junkun Qi , Wei Hu , Zongming Guo

3D point cloud semantic segmentation aims to group all points into different semantic categories, which benefits important applications such as point cloud scene reconstruction and understanding. Existing supervised point cloud semantic…

计算机视觉与模式识别 · 计算机科学 2023-03-29 Canyu Zhang , Zhenyao Wu , Xinyi Wu , Ziyu Zhao , Song Wang

Point clouds are a fundamental 3D representation in computer vision, enabling a wide range of perception tasks. However, real-world point clouds often suffer from degradations such as incompleteness, noise, outliers, and irregular density,…

计算机视觉与模式识别 · 计算机科学 2026-05-26 Haoqing Wu , Alexa Nawotki , Jochen Garcke

Point cloud is point sets defined in 3D metric space. Point cloud has become one of the most significant data format for 3D representation. Its gaining increased popularity as a result of increased availability of acquisition devices, such…

计算机视觉与模式识别 · 计算机科学 2020-01-20 Saifullahi Aminu Bello , Shangshu Yu , Cheng Wang

3D Point cloud registration is still a very challenging topic due to the difficulty in finding the rigid transformation between two point clouds with partial correspondences, and it's even harder in the absence of any initial estimation…

计算机视觉与模式识别 · 计算机科学 2021-06-21 Zhijian Qiao , Huanshu Wei , Zhe Liu , Chuanzhe Suo , Hesheng Wang

For a long time, the point cloud completion task has been regarded as a pure generation task. After obtaining the global shape code through the encoder, a complete point cloud is generated using the shape priorly learnt by the networks.…

机器人学 · 计算机科学 2021-12-06 Jieqi Shi , Lingyun Xu , Liang Heng , Shaojie Shen

3D point cloud has been widely used in applications such as self-driving cars, robotics, CAD models, etc. To the best of our knowledge, these applications raised the issue of privacy leakage in 3D point clouds, which has not been studied…

计算机视觉与模式识别 · 计算机科学 2025-08-08 Haotian Ma , Lin Gu , Siyi Wu , Yingying Zhu

In this paper, we propose PASS3D to achieve point-wise semantic segmentation for 3D point cloud. Our framework combines the efficiency of traditional geometric methods with robustness of deep learning methods, consisting of two stages: At…

计算机视觉与模式识别 · 计算机科学 2020-08-27 Xin Kong , Guangyao Zhai , Baoquan Zhong , Yong Liu

Depth completion is a key task in autonomous driving, aiming to complete sparse LiDAR depth measurements into high-quality dense depth maps through image guidance. However, existing methods usually treat depth maps as an additional channel…

计算机视觉与模式识别 · 计算机科学 2025-01-15 Kuang Zhu , Xingli Gan , Min Sun

Point cloud completion is essential for robust 3D perception in safety-critical applications such as robotics and augmented reality. However, existing models perform static inference and rely heavily on inductive biases learned during…

计算机视觉与模式识别 · 计算机科学 2025-10-14 Linlian Jiang , Rui Ma , Li Gu , Ziqiang Wang , Xinxin Zuo , Yang Wang

With the tide of artificial intelligence, we try to apply deep learning to understand 3D data. Point cloud is an important 3D data structure, which can accurately and directly reflect the real world. In this paper, we propose a simple and…

计算机视觉与模式识别 · 计算机科学 2019-10-01 Kang Zhiheng , Li Ning

Over the last decade, the demand for better segmentation and classification algorithms in 3D spaces has significantly grown due to the popularity of new 3D sensor technologies and advancements in the field of robotics. Point-clouds are one…

计算机视觉与模式识别 · 计算机科学 2019-10-02 Felipe Gomez Marulanda , Pieter Libin , Timothy Verstraeten , Ann Nowé

Significant progress has been made recently in point cloud segmentation utilizing an encoder-decoder framework, which initially encodes point clouds into low-resolution representations and subsequently decodes high-resolution predictions.…

计算机视觉与模式识别 · 计算机科学 2023-10-13 Haibo Qiu , Baosheng Yu , Yixin Chen , Dacheng Tao

A generative model for high-fidelity point clouds is of great importance in synthesizing 3d environments for applications such as autonomous driving and robotics. Despite the recent success of deep generative models for 2d images, it is…

计算机视觉与模式识别 · 计算机科学 2023-07-25 Cheng Wen , Baosheng Yu , Rao Fu , Dacheng Tao

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

Pre-trained 3D vision models have gained significant attention for their promising performance on point cloud data. However, fully fine-tuning these models for downstream tasks is computationally expensive and storage-intensive. Existing…

计算机视觉与模式识别 · 计算机科学 2025-09-12 Zixiang Ai , Zichen Liu , Yuanhang Lei , Zhenyu Cui , Xu Zou , Jiahuan Zhou