Abstract
All convex interpolants to convex bivariate Hermite scattered data are bounded above and below by two piecewise linear functions u and l respectively. This paper discusses numerical algorithms for constructing u and l and how, in certain cases, they form the basis for constructing a Cl convex interpolant using Powell-Sabin elements.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Carnicer, J. M.: Multivariate convexity preserving interpolation by smooth functions. Advances in Computational Mathematics 3 (1995), 395–404.
Carnicer, J. M., Dahmen, W.: Convexity preserving interpolation and Powell-Sabin elements. Computer Aided Geometric Design 9 (1992), 279–289.
Dahmen, W., Micchelli, C. A.: Convexity of multivariate Bernstein polynomials and box spline surfaces. Studia Scientiarum Mathematicorum Hungaricae, 23 (1988), 265–287.
Mulansky, B.: Interpolation of scattered data by a bivariate convex function I: Piecewise linear C° -interpolation. Memorandum no. 858, University of Twente, 1990.
Powell, M. J. D., Sabin, M. A.: Piecewise quadratic approximations on triangles. ACM Transactions on Mathematical Software 3 (1977), 316–325.
Scott, D. S.: The complexity of interpolating given data in three-space with a convex function in two variables. J. Approx. Theory 42 (1984), 52–63.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1996 B. G. Teubner Stuttgart
About this chapter
Cite this chapter
Carnicer, J.M., Floater, M.S. (1996). Algorithms for convexity preserving interpolation of scattered data. In: Hoschek, J., Kaklis, P.D. (eds) Advanced Course on FAIRSHAPE. Vieweg+Teubner Verlag. https://doi.org/10.1007/978-3-322-82969-6_14
Download citation
DOI: https://doi.org/10.1007/978-3-322-82969-6_14
Publisher Name: Vieweg+Teubner Verlag
Print ISBN: 978-3-519-02634-1
Online ISBN: 978-3-322-82969-6
eBook Packages: Springer Book Archive