Results 21 to 30 of about 49,371 (261)

3D Neuron Modeling Based on Controllable Convolution Surface [PDF]

open access: yesJisuanji gongcheng, 2023
In neuroscience, the analysis of complex neural behavior of the brain requires the construction of a smooth and high-quality neuron model.Given the complexity of three-dimensional neuron morphology data, the existing research on the three-dimensional ...
ZHU Xiaoqiang, CHEN Qi
doaj   +1 more source

Adaptive Meshing Based on the Multi-level Partition of Unity and Dynamic Particle Systems for Medical Image Datasets [PDF]

open access: yesInternational Journal Bioautomation, 2018
Surface meshes extracted from sparse medical images contain surface artifacts, there will produce serious distortion and generate numerous narrow triangle meshes.
Zhong Chen   +3 more
doaj   +1 more source

Surface approximation using GPU-based localized fourier transform

open access: yesJournal of King Saud University: Computer and Information Sciences, 2022
The process of surface reconstruction has received considerable interest from researchers in recent years. Surface reconstruction plays a major role in many applications, such as visualization, geometric modeling and multiresolution analysis.
Mohamed H. MOUSA, Mohamed K. HUSSEIN
doaj   +1 more source

On the numerical stability of surface–atmosphere coupling in weather and climate models [PDF]

open access: yesGeoscientific Model Development, 2017
Coupling the atmosphere with the underlying surface presents numerical stability challenges in cost-effective model integrations used for operational weather prediction or climate simulations.
A. Beljaars   +3 more
doaj   +1 more source

Mesh Processing for Snapping Feature Points and Polylines in Orebody Modeling

open access: yesMathematics, 2022
The 3D refinement modeling of the orebody provides an important guarantee for the estimation of the resources and reserves of an ore deposit. Implicit modeling techniques can effectively improve the efficiency of orebody modeling and facilitate the ...
Zhaopeng Li   +4 more
doaj   +1 more source

ED2IF2-Net: Learning Disentangled Deformed Implicit Fields and Enhanced Displacement Fields from Single Images Using Pyramid Vision Transformer

open access: yesApplied Sciences, 2023
There has emerged substantial research in addressing single-view 3D reconstruction and the majority of the state-of-the-art implicit methods employ CNNs as the backbone network.
Xiaoqiang Zhu   +8 more
doaj   +1 more source

Velocity calculation of 2D geometric objects by use of surface interpolation in 3D

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2014
In some engineering applications, it is desirable to calculate the local velocity of geometric objects or boundaries of physical phenomena to understand the deformation speed of the objects or the mechanisms of the physical phenomena.
Yojiro MANDACHI   +2 more
doaj   +1 more source

Implicitization of Rational Parametric Surfaces

open access: yesJournal of Symbolic Computation, 1996
Let \(S\subset \mathbb{C}^3\) be a surface parametrized by a map \(F_a(s,t)= (f_1(s,t),\;f_2(s,t),\;f_3(s,t))\), where \(f_i\) are polynomials in \(s\) and \(t\). The implicitization process would find an equation \(f(x,y,z)=0\) such that the zero locus of the equation, \(W=\{(x,y, z)\mid f(x,y,z) =0\}\), is the smallest subset \(W\subset \mathbb{C}^3\)
George J. Fix   +2 more
openaire   +2 more sources

Modelling with implicit surfaces that interpolate [PDF]

open access: yesACM Transactions on Graphics, 2002
We introduce new techniques for modelling withinterpolating implicit surfaces. This form of implicit surface was first used for problems of surface reconstruction and shape transformation, but the emphasis of our work is on model creation. These implicit surfaces are described by specifying locations in 3D through which the surface should pass, and ...
Greg Turk, James F. O'Brien
openaire   +4 more sources

Tetrahedron-Based Porous Scaffold Design for 3D Printing

open access: yesDesigns, 2019
Tissue repairing has been the ultimate goal of surgery, especially with the emergence of reconstructive medicine. A large amount of research devoted to exploring innovative porous scaffold designs, including homogeneous and inhomogeneous ones, have been ...
Ye Guo, Ke Liu, Zeyun Yu
doaj   +1 more source

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