B-Spline Surface Modelling with Adaptive de Boor Grids in Hydroinformatics

  • C. Lichy
  • V. Berkhahn
Part of the IFIP — The International Federation for Information Processing book series (IFIPAICT, volume 39)


A high quality surface representation is indispensable for a hydrodynamic numerical model, which is related to nature. Standard algorithms for meshing are not able to guarantee these requirements. Applied methods approximate the surface by patches. As a result an implementation for a b-spline surface was realised and tested. The used method “tensor product b-spline surface” is defined by an array of control points, called de Boor points. The associated b-spline functions are defined in every local segment. Changes at one point of the control point mesh result only in local changes of the b-spline surface.

Key words

Surface Modelling B-Splines Adaptive de Boor Grids 


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Copyright information

© IFIP International Federation for Information Processing 2000

Authors and Affiliations

  • C. Lichy
    • 1
  • V. Berkhahn
    • 2
  1. 1.Franzius-Institute for Hydraulic, Waterways and Coastal EngineeringUniversity of HannoverHannoverGermany
  2. 2.Institute for Computer Science in Civil EngineeringUniversity of HannoverHannoverGermany

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