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Joint compression of point cloud geometry and attributes is essential for efficient 3D data representation. Existing methods often rely on post-hoc recoloring procedures and manually tuned bitrate allocation between geometry and attribute…

Image and Video Processing · Electrical Eng. & Systems 2025-12-30 Kai-Hsiang Hsieh , Monyneath Yim , Wen-Hsiao Peng , Jui-Chiu Chiang

Diffusion models are a powerful framework for tackling ill-posed problems, with recent advancements extending their use to point cloud upsampling. Despite their potential, existing diffusion models struggle with inefficiencies as they map…

Computer Vision and Pattern Recognition · Computer Science 2025-01-28 Zhi-Song Liu , Chenhang He , Lei Li

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

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

Recently, state space model (SSM) has gained great attention due to its promising performance, linear complexity, and long sequence modeling ability in both language and image domains. However, it is non-trivial to extend SSM to the point…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Jiuming Liu , Ruiji Yu , Yian Wang , Yu Zheng , Tianchen Deng , Weicai Ye , Hesheng Wang

In recent years, robust matching methods using deep learning-based approaches have been actively studied and improved in computer vision tasks. However, there remains a persistent demand for both robust and fast matching techniques. To…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Kihwan Ryoo , Hyungtae Lim , Hyun Myung

Point clouds produced by 3D sensors are often sparse and noisy, posing challenges for tasks requiring dense and high-fidelity 3D representations. Prior work has explored both implicit feature-based upsampling and distance-function learning…

Computer Vision and Pattern Recognition · Computer Science 2025-09-25 Mahmoud Khater , Mona Strauss , Philipp von Olshausen , Alexander Reiterer

We present MambaH-Fit, a state space modelling framework tailored for hyper-surface fitting-based point cloud normal estimation. Existing normal estimation methods often fall short in modelling fine-grained geometric structures, thereby…

Computer Vision and Pattern Recognition · Computer Science 2025-10-13 Weijia Wang , Yuanzhi Su , Pei-Gen Ye , Yuan-Gen Wang , Xuequan Lu

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

Existing point cloud completion methods struggle to balance high-quality reconstruction with computational efficiency. To address this, we propose PPC-MT, a novel parallel framework for point cloud completion leveraging a hybrid…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Jie Li , Shengwei Tian , Long Yu , Xin Ning

Point cloud streaming is increasingly getting popular, evolving into the norm for interactive service delivery and the future Metaverse. However, the substantial volume of data associated with point clouds presents numerous challenges,…

Computer Vision and Pattern Recognition · Computer Science 2024-08-16 Yanlong Li , Chamara Madarasingha , Kanchana Thilakarathna

We present a detail-driven deep neural network for point set upsampling. A high-resolution point set is essential for point-based rendering and surface reconstruction. Inspired by the recent success of neural image super-resolution…

Computer Vision and Pattern Recognition · Computer Science 2019-03-22 Wang Yifan , Shihao Wu , Hui Huang , Daniel Cohen-Or , Olga Sorkine-Hornung

Point cloud upsampling (PCU) enriches the representation of raw point clouds, significantly improving the performance in downstream tasks such as classification and reconstruction. Most of the existing point cloud upsampling methods focus…

Computer Vision and Pattern Recognition · Computer Science 2023-12-06 Wentao Qu , Yuantian Shao , Lingwu Meng , Xiaoshui Huang , Liang Xiao

In this paper, we propose Neural Points, a novel point cloud representation and apply it to the arbitrary-factored upsampling task. Different from traditional point cloud representation where each point only represents a position or a local…

Computer Vision and Pattern Recognition · Computer Science 2022-04-01 Wanquan Feng , Jin Li , Hongrui Cai , Xiaonan Luo , Juyong Zhang

State Space Models (SSMs) show significant potential for long-sequence modeling, but their reliance on input order conflicts with the irregular nature of point clouds. Existing approaches often rely on predefined serialization schemes whose…

Computer Vision and Pattern Recognition · Computer Science 2026-04-06 Bin Liu , Chunyang Wang , Xuelian Liu , Ge Zhang

Physics-informed machine learning (PIML) has emerged as a promising alternative to classical methods for predicting dynamical systems, offering faster and more generalizable solutions. However, existing models, including recurrent neural…

Machine Learning · Computer Science 2025-01-28 Zheyuan Hu , Nazanin Ahmadi Daryakenari , Qianli Shen , Kenji Kawaguchi , George Em Karniadakis

U-shaped architectures have long dominated the field of medical image segmentation, while Transformers are widely employed for modeling long-range dependencies. The former typically handles scale variations implicitly by aggregating…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Yanhua Zhang , Ke Zhang , Jingyu Wang , Gabriella Balestra , Samanta Rosati , Yulin Wu , Wuwei Wang , Valentina Giannini

Despite the recent development of deep learning-based point cloud upsampling, most MLP-based point cloud upsampling methods have limitations in that it is difficult to train the local and global structure of the point cloud at the same…

Computer Vision and Pattern Recognition · Computer Science 2023-05-03 Dohoon Kim , Minwoo Shin , Joonki Paik

State space models (SSMs) with selection mechanisms and hardware-aware architectures, namely Mamba, have recently demonstrated significant promise in long-sequence modeling. Since the self-attention mechanism in transformers has quadratic…

Computer Vision and Pattern Recognition · Computer Science 2024-04-29 Hanwei Zhang , Ying Zhu , Dan Wang , Lijun Zhang , Tianxiang Chen , Zi Ye

Deep neural networks have revolutionized 3D point cloud processing, yet efficiently handling large and irregular point clouds remains challenging. To tackle this problem, we introduce FastPoint, a novel software-based acceleration technique…

Computer Vision and Pattern Recognition · Computer Science 2025-08-01 Donghyun Lee , Dawoon Jeong , Jae W. Lee , Hongil Yoon