A unifying structure for polar forms and for Bernstein Bézier curves


Dişibüyük Ç., Goldman R.

Journal of Approximation Theory, vol.192, pp.234-249, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 192
  • Publication Date: 2015
  • Doi Number: 10.1016/j.jat.2014.12.007
  • Journal Name: Journal of Approximation Theory
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.234-249
  • Keywords: Bernstein Bezier bases, Bernstein Bezier curves, Polar forms, MUNTZ SPACES, BASES, ALGORITHMS, IDENTITIES
  • Dokuz Eylül University Affiliated: Yes

Abstract

© 2015 Elsevier Inc.We construct polar forms for diverse types of spaces, including trigonometric polynomials, hyperbolic polynomials and special Müntz spaces, by altering the diagonal property of the polar form for homogeneous polynomials. We use this polar form to develop recursive evaluation algorithms and subdivision procedures for the corresponding Bernstein Bézier curves. We also derive identities and properties of these Bernstein bases and Bernstein Bézier curves, including affine invariance, curvilinear precision, end point interpolation, a degree elevation formula, a differentiation formula, a Marsden identity, a convex hull property, total positivity, and the variation diminishing property.