Note on Industrial Applications of Hu’s Surface Extension Algorithm

  • Yu Zang
  • Yong-Jin Liu
  • Yu-Kun Lai
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4975)


An important surface modeling problem in CAD is to connect two disjoint B-spline patches with the second-order geometric continuity. In this paper we present a study to solve this problem based on the surface extension algorithm [Computer-Aided Design 2002; 34:415–419]. Nice properties of this extension algorithm are exploited in depth and thus make our solution very simple and efficient. Various practical examples are presented to demonstrate the usefulness and efficiency of our presented solution.


Differential geometry skinning partial differential equations splines 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Yu Zang
    • 1
  • Yong-Jin Liu
    • 1
  • Yu-Kun Lai
    • 1
  1. 1.Tsinghua National Laboratory for Information Science and Technology, Department of Computer Science and TechnologyTsinghua UniversityBeijingP.R. China

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