Results 251 to 260 of about 13,916,515 (311)

The 3D-3D Registration Problem Revisited

2007 IEEE 11th International Conference on Computer Vision, 2007
We describe a new framework for globally solving the 3D-3D registration problem with unknown point correspondences. This problem is significant as it is frequently encountered in many applications. Existing methods are not fully satisfactory, mainly due to the risk of local minima.
Hongdong Li, Richard Hartley
openaire   +1 more source

DMV3D: Denoising Multi-View Diffusion using 3D Large Reconstruction Model

International Conference on Learning Representations, 2023
We propose \textbf{DMV3D}, a novel 3D generation approach that uses a transformer-based 3D large reconstruction model to denoise multi-view diffusion. Our reconstruction model incorporates a triplane NeRF representation and can denoise noisy multi-view ...
Yinghao Xu, Hao Tan, Fujun Luan, Sai Bi, Peng Wang, Jiahao Li, Zifan Shi, Kalyan Sunkavalli, Gordon Wetzstein, Zexiang Xu, Kai Zhang   +10 more
semanticscholar   +1 more source

RED-BLUE SEPARABILITY PROBLEMS IN 3D

International Journal of Computational Geometry & Applications, 2003
In this paper we study the problems of separability of two disjoint point sets in 3D by multiple criteria extending some notions on separability of two disjoint point sets in the plane.
Hurtado, Ferran, Seara, Carlos, Sethia, Saurabh   +2 more
openaire   +1 more source

Solving 3D TEM problems

Optoelectronics, Instrumentation and Data Processing, 2007
Some issues of calculating the unstationary electromagnetic fields in 3D media with a piecewise homogeneous conductivity are considered. Potential statements of the problems in the time domain are used. An approach to solving this kind of problems is proposed. The computational stability of the method at late times is verified on a model example.
M. I. Ivanov, V. A. Kateshov, I. A. Kremer, M. V. Urev   +3 more
openaire   +1 more source

Interpolating Meshless Methods for 3D Elastic Problems

International Journal of Computational Methods, 2022
Interpolating meshless methods can directly impose boundary conditions because of the interpolation property which shows advantages in dealing with problems with boundary conditions. The interpolating element-free Galerkin method (IEFGM), the improved interpolating element-free Galerkin method (IIEFGM), and the radial point interpolation method (RPIM)
Qian, Yi-Cheng, Yang, Yi-Ru, Liu, Bin, Kong, Ling-Hao, Li, D. M.   +4 more
openaire   +2 more sources

3D Multimodality imaging: The registration problem

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1992
A parameter clustering approach has been developed to register sets of 3D MRI, PET, and SPECT images. Experiments have demonstrated the validity of the approach. In addition, by adjusting the clustering criterion, this clustering approach can build up a link between the least squares fitting and the Hough transform approach in the application of 3D ...
Chen, Qin-Sheng, Defrise, Michel, Deconinck, Frank, Jonckheer, Marc   +3 more
openaire   +2 more sources

DreamCraft3D: Hierarchical 3D Generation with Bootstrapped Diffusion Prior

International Conference on Learning Representations, 2023
We present DreamCraft3D, a hierarchical 3D content generation method that produces high-fidelity and coherent 3D objects. We tackle the problem by leveraging a 2D reference image to guide the stages of geometry sculpting and texture boosting.
Jingxiang Sun, Bo Zhang, Ruizhi Shao, Lizhen Wang, Wen Liu, Zhenda Xie, Yebin Liu   +6 more
semanticscholar   +1 more source

3D/4D sonography – any safety problem

Journal of Perinatal Medicine, 2016
AbstractGray-scale image data are processed in 3D ultrasound by repeated scans of multiple planes within a few seconds to achieve one surface rendering image and three perpendicular plane images. The 4D image is achieved by repeating 3D images in short intervals, i.e. 3D and 4D ultrasound are based on simple B-mode images.
Ritsuko K, Pooh, Kazuo, Maeda, Asim, Kurjak, Cihat, Sen, Alaa, Ebrashy, Abdallah, Adra, Aliyu Labaran, Dayyabu, Tuangsit, Wataganara, Renato Augusto Moreira, de Sá, Milan, Stanojevic   +9 more
openaire   +2 more sources

No Pose, No Problem: Surprisingly Simple 3D Gaussian Splats from Sparse Unposed Images

International Conference on Learning Representations
We introduce NoPoSplat, a feed-forward model capable of reconstructing 3D scenes parameterized by 3D Gaussians from \textit{unposed} sparse multi-view images.
Botao Ye, Sifei Liu, Haofei Xu, Xueting Li, Marc Pollefeys, Ming-Hsuan Yang, Songyou Peng   +6 more
semanticscholar   +1 more source

3D reconstruction: The registration problem

Computer Vision, Graphics, and Image Processing, 1988
Abstract Three dimensional (3D) reconstruction of serial sections through biological tissue is a very important method for visualizing and quantifying the 3D relationships between internal structures. This project involves the automation of the 3D reconstruction process, focusing on the problem of registering or aligning successive serial sections ...
openaire   +1 more source