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Many existing approaches for 3D point cloud semantic segmentation are fully supervised. These fully supervised approaches heavily rely on large amounts of labeled training data that are difficult to obtain and cannot segment new classes…

计算机视觉与模式识别 · 计算机科学 2021-03-30 Na Zhao , Tat-Seng Chua , Gim Hee Lee

Point cloud completion is a vital task focused on reconstructing complete point clouds and addressing the incompleteness caused by occlusion and limited sensor resolution. Traditional methods relying on fixed local region partitioning, such…

图形学 · 计算机科学 2025-09-30 Zhenyu Shu , Jian Yao , Shiqing Xin

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…

图形学 · 计算机科学 2019-03-12 Matan Shoef , Sharon Fogel , Daniel Cohen-Or

In this paper, we explore a novel framework, EGIInet (Explicitly Guided Information Interaction Network), a model for View-guided Point cloud Completion (ViPC) task, which aims to restore a complete point cloud from a partial one with a…

计算机视觉与模式识别 · 计算机科学 2024-07-24 Hang Xu , Chen Long , Wenxiao Zhang , Yuan Liu , Zhen Cao , Zhen Dong , Bisheng Yang

Autonomous driving is the key technology of intelligent logistics in Industrial Internet of Things (IIoT). In autonomous driving, the appearance of incomplete point clouds losing geometric and semantic information is inevitable owing to…

机器学习 · 计算机科学 2023-07-19 Jingzhi Tu , Gang Mei , Francesco Piccialli

Depth prediction is a critical problem in robotics applications especially autonomous driving. Generally, depth prediction based on binocular stereo matching and fusion of monocular image and laser point cloud are two mainstream methods.…

计算机视觉与模式识别 · 计算机科学 2023-03-14 Guancheng Chen , Junli Lin , Huabiao Qin

Point cloud is an important type of geometric data structure. Due to its irregular format, most researchers transform such data to regular 3D voxel grids or collections of images. This, however, renders data unnecessarily voluminous and…

计算机视觉与模式识别 · 计算机科学 2017-04-12 Charles R. Qi , Hao Su , Kaichun Mo , Leonidas J. Guibas

The matching of 3D shapes has been extensively studied for shapes represented as surface meshes, as well as for shapes represented as point clouds. While point clouds are a common representation of raw real-world 3D data (e.g. from laser…

计算机视觉与模式识别 · 计算机科学 2026-05-05 Dongliang Cao , Florian Bernard

Point cloud analysis is challenging due to irregularity and unordered data structure. To capture the 3D geometries, prior works mainly rely on exploring sophisticated local geometric extractors using convolution, graph, or attention…

计算机视觉与模式识别 · 计算机科学 2022-11-30 Xu Ma , Can Qin , Haoxuan You , Haoxi Ran , Yun Fu

Recent research has shown the effectiveness of mmWave radar sensing for object detection in low visibility environments, which makes it an ideal technique in autonomous navigation systems. In this paper, we introduce Radar to Point Cloud…

计算机视觉与模式识别 · 计算机科学 2022-07-25 Yue Sun , Honggang Zhang , Zhuoming Huang , Benyuan Liu

Learning and selecting important points on a point cloud is crucial for point cloud understanding in various applications. Most of early methods selected the important points on 3D shapes by analyzing the intrinsic geometric properties of…

计算机视觉与模式识别 · 计算机科学 2023-05-11 Xinhai Liu , Zhizhong Han , Sanghuk Lee , Yan-Pei Cao , Yu-Shen Liu

In 2D image processing, some attempts decompose images into high and low frequency components for describing edge and smooth parts respectively. Similarly, the contour and flat area of 3D objects, such as the boundary and seat area of a…

计算机视觉与模式识别 · 计算机科学 2021-02-09 Mutian Xu , Junhao Zhang , Zhipeng Zhou , Mingye Xu , Xiaojuan Qi , Yu Qiao

Point cloud segmentation is a fundamental task in 3D scene understanding. Its progress is constrained by the high cost and time required for dense 3D annotations, making labeled samples difficult to obtain. Beyond annotation scarcity,…

计算机视觉与模式识别 · 计算机科学 2026-05-29 Thenukan Pathmanathan , Kanchan Keisham , Thangarajah Akilan

Point cloud completion aims to recover the complete 3D shape of an object from partial observations. While approaches relying on synthetic shape priors achieved promising results in this domain, their applicability and generalizability to…

计算机视觉与模式识别 · 计算机科学 2024-09-17 Başak Melis Öcal , Maxim Tatarchenko , Sezer Karaoglu , Theo Gevers

Unpaired 3D object completion aims to predict a complete 3D shape from an incomplete input without knowing the correspondence between the complete and incomplete shapes. In this paper, we propose the novel KTNet to solve this task from the…

计算机视觉与模式识别 · 计算机科学 2023-07-07 Zhen Cao , Wenxiao Zhang , Xin Wen , Zhen Dong , Yu-shen Liu , Xiongwu Xiao , Bisheng Yang

2D image representations are in regular grids and can be processed efficiently, whereas 3D point clouds are unordered and scattered in 3D space. The information inside these two visual domains is well complementary, e.g., 2D images have…

计算机视觉与模式识别 · 计算机科学 2021-03-29 Wenbo Hu , Hengshuang Zhao , Li Jiang , Jiaya Jia , Tien-Tsin Wong

Point clouds are characterized by irregularity and unstructuredness, which pose challenges in efficient data exploitation and discriminative feature extraction. In this paper, we present an unsupervised deep neural architecture called…

计算机视觉与模式识别 · 计算机科学 2023-02-08 Qijian Zhang , Junhui Hou , Yue Qian , Yiming Zeng , Juyong Zhang , Ying He

3D shape completion for real data is important but challenging, since partial point clouds acquired by real-world sensors are usually sparse, noisy and unaligned. Different from previous methods, we address the problem of learning 3D…

计算机视觉与模式识别 · 计算机科学 2020-08-21 Jiayuan Gu , Wei-Chiu Ma , Sivabalan Manivasagam , Wenyuan Zeng , Zihao Wang , Yuwen Xiong , Hao Su , Raquel Urtasun

Real-world point clouds usually suffer from incompleteness and display different poses. While current point cloud completion methods excel in reproducing complete point clouds with consistent poses as seen in the training set, their…

计算机视觉与模式识别 · 计算机科学 2024-01-01 Yu Chen , Pengcheng Shi

Point cloud completion is crucial for 3D computer vision tasks in autonomous driving, augmented reality, and robotics. However, obtaining clean and complete point clouds from real-world environments is challenging due to noise and…

计算机视觉与模式识别 · 计算机科学 2025-09-09 Keneni W. Tesema , Lyndon Hill , Mark W. Jones , Gary K. L. Tam