Results 221 to 230 of about 6,844,739 (267)

Computing offsets of NURBS curves and surfaces

Computer-Aided Design, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Piegl, Les A., Tiller, Wayne
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Direct highlight line modification on nurbs surfaces

Computer Aided Geometric Design, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chen, Yifan, Beier, Klaus-Peter, Papageorgiou, Dimitris   +2 more
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Measurement-based modification of NURBS surfaces

Computer-Aided Design, 2002
A frequent requirement in computer aided design and manufacture is to update or refine an existing CAD model using measured data. Least squares surface fitting is known to suffer from stability problems, caused by an insufficient measurement density in some regions.
Djordje Brujic, Mihailo Ristic, Iain Ainsworth   +2 more
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NURBS-compatible subdivision surfaces

2010
Two main technologies are available to design and represent freeform surfaces: Non-Uniform Rational B-Splines (NURBS) and subdivision surfaces. Both representations are built on uniform B-splines, but they extend this foundation in incompatible ways, and different industries have therefore established a preference for one representation over the other.
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NURBS surface generation by control points

2011 IEEE 3rd International Conference on Communication Software and Networks, 2011
A method on how to generate traditional quadrilateral NURBS surfaces, non-quadrilateral NURBS surfaces, such as triangle NURBS (Non-uniform Rational B-spline) surfaces and pentagon NURBS surfaces and their equidistant surfaces is presented. A NURBS surface is a bi-parameter surface, and the surface can be generated in accordance with its parameters ...
Wei Shengli, Zhao Chongming
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Area-Preserving Hierarchical NURBS Surfaces Computed by the Optimal Freeform Transformation

Comput. Aided Des., 2022
Xiaowei Li, Yi-Jun Yang, W. Zeng, Yuchao Bi, Jinlan Xu, Gang Xu, Xing-Jun Zhang   +6 more
semanticscholar   +1 more source

Curvature adapted triangulation of NURBS surfaces

13th Computational Fluid Dynamics Conference, 1997
Full exploitation of the sophisticated physical modeling capabilities of computational fluid dynamics has been hampered by the inability to generate high quality grids in a timely manner. Complex geometries further exacerbate grid generation difficulties.
Lee Kania, Saif Warsi, Lee Kania, Saif Warsi   +3 more
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NURBS for curve and surface design

Computer-Aided Design, 1993
From the Publisher: NURBS (nonuniform rational B-splines) promises to be the future geometry standard for free-form curves and surfaces. This volume contains recent results and new NURBS techniques and developments--the most important being curve/surface from the CAD/CAM industry. The book has been carefully refereed.
T. Hermann, G. Renner
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Tessellation of trimmed NURB surfaces

Computer Aided Geometric Design, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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3D NURBS representation of surfaces for illumination

SPIE Proceedings, 2002
Use of NURBS surfaces to create facets on a reflecting surface will be considered. Specifically, the design of a reflector that generates a circular illuminance pattern will be investigated. Important considerations are: choice of variables used to represent a NURBS surface, total number of variables, parameterization and/or knot vector specification ...
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