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Point cloud reconstruction from raw point cloud has been an important topic in computer graphics for decades, especially due to its high demand in modeling and rendering applications. An important way to solve this problem is establishing a…

计算机视觉与模式识别 · 计算机科学 2025-03-17 Hui Tian , Kai Xu

Most existing approaches for point cloud normal estimation aim to locally fit a geometric surface and calculate the normal from the fitted surface. Recently, learning-based methods have adopted a routine of predicting point-wise weights to…

计算机视觉与模式识别 · 计算机科学 2023-03-31 Hang Du , Xuejun Yan , Jingjing Wang , Di Xie , Shiliang Pu

Point cloud registration involves determining a rigid transformation to align a source point cloud with a target point cloud. This alignment is fundamental in applications such as autonomous driving, robotics, and medical imaging, where…

计算机视觉与模式识别 · 计算机科学 2025-02-04 Yu-Xin Zhang , Jie Gui , Baosheng Yu , Xiaofeng Cong , Xin Gong , Wenbing Tao , Dacheng Tao

Reconstructing accurate implicit surface representations from point clouds remains a challenging task, particularly when data is captured using low-quality scanning devices. These point clouds often contain substantial noise, leading to…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Tengkai Wang , Weihao Li , Ruikai Cui , Shi Qiu , Nick Barnes

Deep learning-based point cloud registration models are often generalized from extensive training over a large volume of data to learn the ability to predict the desired geometric transformation to register 3D point clouds. In this paper,…

计算机视觉与模式识别 · 计算机科学 2020-10-23 Lingjing Wang , Yu Hao , Xiang Li , Yi Fang

3D surface reconstruction from point clouds is a key step in areas such as content creation, archaeology, digital cultural heritage, and engineering. Current approaches either try to optimize a non-data-driven surface representation to fit…

计算机视觉与模式识别 · 计算机科学 2024-02-09 Philipp Erler , Lizeth Fuentes , Pedro Hermosilla , Paul Guerrero , Renato Pajarola , Michael Wimmer

Training a deep network policy for robot manipulation is notoriously costly and time consuming as it depends on collecting a significant amount of real world data. To work well in the real world, the policy needs to see many instances of…

机器人学 · 计算机科学 2019-06-24 Xinchen Yan , Mohi Khansari , Jasmine Hsu , Yuanzheng Gong , Yunfei Bai , Sören Pirk , Honglak Lee

We present a neural-network-based architecture for 3D point cloud denoising called neural projection denoising (NPD). In our previous work, we proposed a two-stage denoising algorithm, which first estimates reference planes and follows by…

计算机视觉与模式识别 · 计算机科学 2019-04-10 Chaojing Duan , Siheng Chen , Jelena Kovacevic

Shape implicit neural representations (INRs) have recently shown to be effective in shape analysis and reconstruction tasks. Existing INRs require point coordinates to learn the implicit level sets of the shape. When a normal vector is…

计算机视觉与模式识别 · 计算机科学 2023-05-18 Yizhak Ben-Shabat , Chamin Hewa Koneputugodage , Stephen Gould

Point clouds are often the default choice for many applications as they exhibit more flexibility and efficiency than volumetric data. Nevertheless, their unorganized nature -- points are stored in an unordered way -- makes them less suited…

计算机视觉与模式识别 · 计算机科学 2020-08-18 Yida Wang , David Joseph Tan , Nassir Navab , Federico Tombari

3D face registration is an important process in which a 3D face model is aligned and mapped to a template face. However, the task of 3D face registration becomes particularly challenging when dealing with partial face data, where only…

计算机视觉与模式识别 · 计算机科学 2024-05-17 Yuchen Guo , Hanqun Cao , Lok Ming Lui

Despite the extensive usage of point clouds in 3D vision, relatively limited data are available for training deep neural networks. Although data augmentation is a standard approach to compensate for the scarcity of data, it has been less…

计算机视觉与模式识别 · 计算机科学 2021-10-12 Sihyeon Kim , Sanghyeok Lee , Dasol Hwang , Jaewon Lee , Seong Jae Hwang , Hyunwoo J. Kim

Non-rigid alignment of point clouds is crucial for scene understanding, reconstruction, and various computer vision and robotics tasks. Recent advancements in implicit deformation networks for non-rigid registration have significantly…

计算机视觉与模式识别 · 计算机科学 2025-02-18 Mingyang Zhao , Gaofeng Meng , Dong-Ming Yan

During neurosurgery, medical images of the brain are used to locate tumors and critical structures, but brain tissue shifts make pre-operative images unreliable for accurate removal of tumors. Intra-operative imaging can track these…

Generative models that produce point clouds have emerged as a powerful tool to represent 3D surfaces, and the best current ones rely on learning an ensemble of parametric representations. Unfortunately, they offer no control over the…

计算机视觉与模式识别 · 计算机科学 2019-11-27 Jan Bednarik , Shaifali Parashar , Erhan Gundogdu , Mathieu Salzmann , Pascal Fua

Rigid registration of partial observations is a fundamental problem in various applied fields. In computer graphics, special attention has been given to the registration between two partial point clouds generated by scanning devices.…

计算机视觉与模式识别 · 计算机科学 2021-10-12 Zihao Yan , Zimu Yi , Ruizhen Hu , Niloy J. Mitra , Daniel Cohen-Or , Hui Huang

This paper focuses on a novel approach for false-positive reduction (FPR) of nodule candidates in Computer-aided detection (CADe) systems following the suspicious lesions detection stage. Contrary to typical decisions in medical image…

图像与视频处理 · 电气工程与系统科学 2021-06-11 Ivan Drokin , Elena Ericheva

Learning-based 3D reconstruction using implicit neural representations has shown promising progress not only at the object level but also in more complicated scenes. In this paper, we propose Dynamic Plane Convolutional Occupancy Networks,…

计算机视觉与模式识别 · 计算机科学 2020-11-12 Stefan Lionar , Daniil Emtsev , Dusan Svilarkovic , Songyou Peng

We propose a deep neural network for supervised learning on neuroanatomical shapes. The network directly operates on raw point clouds without the need for mesh processing or the identification of point correspondences, as spatial…

计算机视觉与模式识别 · 计算机科学 2018-06-05 Benjamin Gutierrez-Becker , Christian Wachinger

Diffusion MRI (dMRI) plays a crucial role in studying brain white matter connectivity. Cortical surface reconstruction (CSR), including the inner whiter matter (WM) and outer pial surfaces, is one of the key tasks in dMRI analyses such as…