Results 171 to 180 of about 9,704,991 (211)

Multiresolution B‐spline Radiosity

Computer Graphics Forum, 1995
AbstractThis paper introduces a kind of new wavelet radiosity method called multiresolution B‐spline radiosity, which uses B‐splines of different scales to represent radiosity distribution functions. A set of techniques and algorithms, such as function extrapolation, adaptive quadrature, scale adjustment and octree, are proposed to implement it.
Yizhou Yu, Qunsheng Peng 0001
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As-developable-as-possible B-spline surface interpolation to B-spline curves

Computer Aided Geometric Design, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pengbo Bo, Yujian Zheng, Dianhui Chu, Caiming Zhang 0001   +3 more
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B-Splines on the Circle and Trigonometric B-Splines

1984
We shall first introduce the notion of circle splines. Denote by Πn the space of polynomials of degree at most n on the unit circle U = {z € (ℂ: |z| = 1}.
T. N. T. Goodman, S. L. Lee
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Hierarchical B-spline refinement

Proceedings of the 15th annual conference on Computer graphics and interactive techniques, 1988
Refinement is usually advocated as a means of gaining finer control over a spline curve or surface during editing. For curves, refinement is a local process. It permits the change of control vertices and subsequent editing of the detail in one region of the curve while leaving control vertices in other regions unaffected.
David R. Forsey, Richard H. Bartels
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B-Splines

WIREs Computational Statistics, 2010
AbstractB‐splines are a family of smooth curves that can be constructed to interpolate or approximate a set of control points. They are used extensively for curve and surface design in engineering and media applications. Their popularity comes from the fact that they offer a simple and intuitive means of adjusting the shape of a curve or surface ...
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Energy and B-spline interproximation

Computer-Aided Design, 1997
In this paper, we study B-spline curve interproximation with different energy forms and parametrization techniques, and present an interproximation scheme for B-spline surfaces. It shows that the energy form has a much bigger impact on the generated curve than the parametrization technique.
Xuefu Wang, Fuhua Cheng, Brian A. Barsky
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Semi-structured \(B\)-spline for blending two \(B\)-spline surfaces

Comput. Math. Appl., 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hongwei Lin, Yunyang Xiong, Hongwei Liao
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A faster B spline snake

2009 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2009
Active contour model(or'snake') is efficient in object contour extraction. It is widely applied in many fields, such as human facial feature extraction, segmenation of medical images, vedio object segmentation, 3D reconstruction, and so on. The implementation of GVF into the B Spline snake is specified, the resulting GVF B spline snake, retains the ...
Wang Xin, Tu Yunxia
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Extended Cubic Uniform B-spline and α-B-spline

Acta Automatica Sinica, 2008
Abstract Spline curve and surface play an important role in CAD and computer graphics. In this paper, we propose several extensions of cubic uniform B-spline. Then, we present the extensions of interpolating α-B-spline based on the new B-splines and the singular blending technique.
Gang XU, Guo-Zhao WANG
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Patchwork B-spline refinement

Computer-Aided Design, 2017
Abstract Hierarchical splines allow to use representations with varying level of detail in different parts of a geometric model. However, the progression from coarse to fine scale is based on a single sequence of nested spline spaces. More precisely, each space defining a representation of some level must simultaneously be a subspace of all the ...
Nora Engleitner, Bert Jüttler
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