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Computer-Aided Design
Volume 36, Issue 5, April 2004, Pages 413-424
 
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doi:10.1016/S0010-4485(03)00111-8    How to Cite or Link Using DOI (Opens New Window)
Copyright © 2003 Elsevier Ltd. All rights reserved.

A practical construction of G1 smooth biquintic B-spline surfaces over arbitrary topology

Xiquan Shi a, c, Tianjun Wang d, Corresponding Author Contact Information, E-mail The Corresponding Author, b and Piqiang Yu a

a Department of Mathematics, Dalian University of Technology, Dalian 116024, People's Republic of China b Atlantis Components Inc., 270 Third Street, Cambridge, MA 02142, USA c Department of Mathematics, Delaware State University, DE 19901, USA d Department of Mathematics, Horbin Institute of Technology, Horbin 150001, China

Received 20 November 2002; 
Revised 5 May 2003; 
accepted 14 May 2003. 
Available online 14 June 2003.

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Abstract

The motivation of this paper is to develop a local scheme of constructing G1 smooth B-spline surfaces with single interior knots over arbitrary topology. In this paper, we obtain the conditions of G1 continuity between two adjacent biquintic B-spline surfaces with interior single knots. These conditions are directly represented by the relevant control points of the two B-spline surfaces. By utilizing these G1 conditions, we develop the first local scheme of constructing G1 smooth biquintic B-spline surfaces with interior single knots for arbitrary topological type. The high complexity of deriving the local G1 scheme is well overwhelmed. The biquintic is the lowest degree for which there exists a local scheme of constructing G1 smooth B-spline surfaces with interior single knots over arbitrary topology.

Author Keywords: Author Keywords: Biquintic B-spline surface; Discrete B-spline; G1 smooth; Local scheme; Arbitrary topology

Article Outline

1. Introduction
2. Previous work
2.1. G1 smooth join of Bézier patches
2.2. G1 smooth join of B-spline patches
3. G1 conditions of two adjacent biquintic B-spline patches
3.1. Decomposition of the B-spline curves C0(v), C1(v) and C2(v)
3.2. G1 conditions between S1(u,v) and S2(u,v)
4. A local construction for G1 smooth biquintic B-spline surfaces
4.1. G1 continuity around an m-patch corner
4.2. G1 continuity across a common boundary curve
5. Conclusions with results and future work
appendix a
References
Vitae








Computer-Aided Design
Volume 36, Issue 5, April 2004, Pages 413-424
 
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