Abstract
The concept of basis matrix of B-splines is presented. A general matrix representation, which results in an explicitly recursive matrix formula, for nonuniform B-spline curves of an arbitrary degree is also presented by means of Toeplitz matrix. New recursive matrix representations for uniform B-spline curves and Bezier curves of an arbitrary degree are obtained as special cases of that for nonuniform B-spline curves. The recursive formula for basis matrix can be substituted for de Boor-Cox's one for B-splines, and it has better time complexity than de Boor-Cox's formula when used for conversion and computation of B-spline curves and surfaces between different CAD systems. Finally, some applications of the matrix representations are presented.
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