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Remarkable performance from Transformer networks in Natural Language Processing promote the development of these models in dealing with computer vision tasks such as image recognition and segmentation. In this paper, we introduce a novel…

Computer Vision and Pattern Recognition · Computer Science 2022-10-26 Qi Zhong , Xian-Feng Han

We propose a method to learn object representations from 3D point clouds using bundles of geometrically interpretable hidden units, which we call geometric capsules. Each geometric capsule represents a visual entity, such as an object or a…

Machine Learning · Computer Science 2019-12-10 Nitish Srivastava , Hanlin Goh , Ruslan Salakhutdinov

Most existing point cloud completion methods suffer from the discrete nature of point clouds and the unstructured prediction of points in local regions, which makes it difficult to reveal fine local geometric details. To resolve this issue,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-31 Peng Xiang , Xin Wen , Yu-Shen Liu , Yan-Pei Cao , Pengfei Wan , Wen Zheng , Zhizhong Han

Existing polygonal surface reconstruction methods heavily depend on input completeness and struggle with incomplete point clouds. We argue that while current point cloud completion techniques may recover missing points, they are not…

Computer Vision and Pattern Recognition · Computer Science 2025-03-12 Zhaiyu Chen , Yuqing Wang , Liangliang Nan , Xiao Xiang Zhu

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,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Haoqing Wu , Alexa Nawotki , Jochen Garcke

Segmentation of three-dimensional (3D) point clouds is an important task for autonomous systems. However, success of segmentation algorithms depends greatly on the quality of the underlying point clouds (resolution, completeness etc.). In…

Computer Vision and Pattern Recognition · Computer Science 2023-11-27 Yigit Gurses , Melisa Taspinar , Mahmut Yurt , Sedat Ozer

Point cloud completion aims to reconstruct complete 3D shapes from partial 3D point clouds. With advancements in deep learning techniques, various methods for point cloud completion have been developed. Despite achieving encouraging…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Qiuxia Wu , Haiyang Huang , Kunming Su , Zhiyong Wang , Kun Hu

Point cloud completion aims to reconstruct complete shapes from partial observations. Although current methods have achieved remarkable performance, they still have some limitations: Supervised methods heavily rely on ground truth, which…

Computer Vision and Pattern Recognition · Computer Science 2025-09-29 Jingjing Lu , Huilong Pi , Yunchuan Qin , Zhuo Tang , Ruihui Li

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

LiDAR-based 3D object detection is an important task for autonomous driving and current approaches suffer from sparse and partial point clouds of distant and occluded objects. In this paper, we propose a novel two-stage approach, namely…

Computer Vision and Pattern Recognition · Computer Science 2020-12-23 Yanan Zhang , Di Huang , Yunhong Wang

Although point cloud registration has achieved remarkable advances in object-level and indoor scenes, large-scale registration methods are rarely explored. Challenges mainly arise from the huge point number, complex distribution, and…

Computer Vision and Pattern Recognition · Computer Science 2023-08-11 Jiuming Liu , Guangming Wang , Zhe Liu , Chaokang Jiang , Marc Pollefeys , Hesheng Wang

We present CpT: Convolutional point Transformer - a novel deep learning architecture for dealing with the unstructured nature of 3D point cloud data. CpT is an improvement over existing attention-based Convolutions Neural Networks as well…

Computer Vision and Pattern Recognition · Computer Science 2021-11-23 Chaitanya Kaul , Joshua Mitton , Hang Dai , Roderick Murray-Smith

In this paper, we present a novel deep method to reconstruct a point cloud of an object from a single still image. Prior arts in the field struggle to reconstruct an accurate and scalable 3D model due to either the inefficient and expensive…

Computer Vision and Pattern Recognition · Computer Science 2019-11-18 Anh-Duc Nguyen , Seonghwa Choi , Woojae Kim , Sanghoon Lee

Recent deep networks that directly handle points in a point set, e.g., PointNet, have been state-of-the-art for supervised learning tasks on point clouds such as classification and segmentation. In this work, a novel end-to-end deep…

Computer Vision and Pattern Recognition · Computer Science 2018-04-04 Yaoqing Yang , Chen Feng , Yiru Shen , Dong Tian

Recovering high quality surfaces from noisy point clouds, known as point cloud denoising, is a fundamental yet challenging problem in geometry processing. Most of the existing methods either directly denoise the noisy input or filter raw…

Computer Vision and Pattern Recognition · Computer Science 2023-07-04 Zheng Liu , Yaowu Zhao , Sijing Zhan , Yuanyuan Liu , Renjie Chen , Ying He

In this paper, we propose a novel 3D registration paradigm, Generative Point Cloud Registration, which bridges advanced 2D generative models with 3D matching tasks to enhance registration performance. Our key idea is to generate cross-view…

Computer Vision and Pattern Recognition · Computer Science 2026-02-17 Haobo Jiang , Jin Xie , Jian Yang , Liang Yu , Jianmin Zheng

Point completion refers to complete the missing geometries of objects from partial point clouds. Existing works usually estimate the missing shape by decoding a latent feature encoded from the input points. However, real-world objects are…

Computer Vision and Pattern Recognition · Computer Science 2020-10-16 Yinyu Nie , Yiqun Lin , Xiaoguang Han , Shihui Guo , Jian Chang , Shuguang Cui , Jian Jun Zhang

Point cloud anomaly detection is essential for various industrial applications. The huge computation and storage costs caused by the increasing product classes limit the application of single-class unsupervised methods, necessitating the…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Yuqi Cheng , Yunkang Cao , Dongfang Wang , Weiming Shen , Wenlong Li

Designing a point cloud upsampler, which aims to generate a clean and dense point cloud given a sparse point representation, is a fundamental and challenging problem in computer vision. A line of attempts achieves this goal by establishing…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Pingping Cai , Zhenyao Wu , Xinyi Wu , Song Wang

Unsupervised point cloud completion aims at estimating the corresponding complete point cloud of a partial point cloud in an unpaired manner. It is a crucial but challenging problem since there is no paired partial-complete supervision that…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Yingjie Cai , Kwan-Yee Lin , Chao Zhang , Qiang Wang , Xiaogang Wang , Hongsheng Li