Results 231 to 240 of about 45,072 (266)
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Hierarchical B-spline refinement
Proceedings of the 15th annual conference on Computer graphics and interactive techniques, 1988Refinement 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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Energy and B-spline interproximation
Computer-Aided Design, 1997In 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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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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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, 2008Abstract 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.
XU Gang, WANG GuoZhao
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Approximation with diversified B-splines
Computer Aided Geometric Design, 2014zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ulrich Reif, Nada Sissouno
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Semi-structured \(B\)-spline for blending two \(B\)-spline surfaces
Comput. Math. Appl., 2014zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hongwei Lin, Yunyang Xiong, Hongwei Liao
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Adaptivity with B-spline Elements
2017This paper takes a stage further the work of Kraft [1] and of Grinspun et al. [2] who used subdivision formulations to show that finite element formulation can be expressed better in terms of the basis functions used to span the space, rather than in terms of the partitioning of the domain into elements.
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Isogeometric analysis using T-splines
Computer Methods in Applied Mechanics and Engineering, 2010Y Bazilevs, T J R Hughes, J A Evans
exaly