Results 21 to 30 of about 16,369,324 (285)
Topology Guaranteed B-Spline Surface/Surface Intersection
ACM Transactions on Graphics, 2023 The surface/surface intersection technique serves as one of the most fundamental functions in modern Computer Aided Design (CAD) systems. Despite the long research history and successful applications of surface intersection algorithms in various CAD industrial software, challenges still exist in balancing computational efficiency, accuracy, as well as ...
Jieyin Yang +2 more
openaire +2 more sources
On the limits of non-uniform rational B-spline surfaces with varying weights
Advances in Mechanical Engineering, 2017 The non-uniform rational B-spline is a mathematical model commonly used in computer-aided design and manufacturing. For a non-uniform rational B-spline surface, when a single weight approaches infinity, the surface tends to the corresponding control ...
Yue Zhang, Chun-Gang Zhu, Qing-Jie Guo
doaj +1 more source
Frontiers in Neurorobotics, 2021 A number of methods have been proposed for face reconstruction from single/multiple image(s). However, it is still a challenge to do reconstruction for limited number of wild images, in which there exists complex different imaging conditions, various ...
Weilong Peng +5 more
doaj +1 more source
T-Spline Surface Toolpath Generation Using Watershed-Based Feature Recognition
Applied Sciences, 2020 The freeform surface is treated as a single machining region for most traditional toolpath generation algorithms. However, due to the complexity of a freeform surface, it is impossible to produce a high-quality surface using one unique machining process.
Yazui Liu, Gang Zhao, Pengfei Han
doaj +1 more source
3D Reconstruction Using Cubic Bezier Spline Curves and Active Contours (Case Study) [PDF]
Iranian Journal of Medical Physics, 2012 Introduction 3D reconstruction of an object from its 2D cross-sections (slices) has many applications in different fields of sciences such as medical physics and biomedical engineering.
Atefeh Foroozandeh +4 more
doaj +1 more source
A tension approach to controlling the shape of cubic spline surfaces on FVS triangulations [PDF]
, 2010 We propose a parametric tensioned version of the FVS macro-element to control the shape of the composite surface and remove artificial oscillations, bumps and other undesired behaviour.
Manni, Carla, Davydov, Oleg
core +4 more sources
3D Surface Reconstruction of Mathematical modelling Used for Controlling the Generation of Different Bi-cubic BSpline in Matrix Form without Changing the Control Points [PDF]
Engineering and Technology Journal, 2016 This paper introduces a 3D surface reconstruction of mathematical modelling by using blossoming, dependent on a parameter in the coefficient of the control points, the bi-cubic B-spline surface in matrix form scheme can be utilized to obtain a better ...
Abdul-Mohssen J. Abdul-Hossen
doaj +1 more source
An efficient data structure for calculation of unstructured T-spline surfaces
Visual Computing for Industry, Biomedicine, and Art, 2019 To overcome the topological constraints of non-uniform rational B-splines, T-splines have been proposed to define the freeform surfaces. The introduction of T-junctions and extraordinary points makes it possible to represent arbitrarily shaped models by ...
Wei Wang +3 more
doaj +1 more source
B-spline Functional Model of Terrestrial Sunshape Based on Measured Data [PDF]
Jisuanji kexueThe function describing the distribution of solar radiative energy received on the ground is called the surface sunshape model.It is important for accurate simulation of the distribution of radiative flux density on the receiver in solar power tower.The ...
SHEN Tong, ZHAO Le, FENG Jieqing
doaj +1 more source
Fast Surface Reconstruction Technique Based on Anderson Accelerated I-PIA Method
IEEE Access, 2023 For curve and surface reconstruction, the implicit progressive-iterative approximation (I-PIA) is widely used in many applications because it is efficient in data fitting and handling noise and missing data. By introducing Anderson extrapolation to the I-
Jingguo Dai, Yeqing Yi, Chengzhi Liu
doaj +1 more source