Abstract
Dual Bernstein polynomials of one or two variables have proved to be very useful in obtaining Bezier form of the L 2-solution of the problem of best polynomial approximation of Bezier curve or surface. In this connection, the Bezier coefficients of dual Bernstein polynomials are to be evaluated at a reasonable cost. In this paper, a set of recurrence relations satisfied by the Bezier coefficients of dual bivariate Bernstein polynomials is derived and an efficient algorithm for evaluation of these coefficients is proposed. Applications of this result to some approximation problems of Computer Aided Geometric Design (CAGD) are discussed.
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