de Boor-Fix dual functionals and algorithms for Tchebycheffian B-spline curves |
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Authors: | P J Barry |
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Institution: | 1. Computer Science Department, University of Minnesota, 4-192 EE/CSci Building 200 Union St. SE, 55455, Minneapolis, MN, USA
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Abstract: | The de Boor-Fix dual functionals are a potent tool for deriving results about piecewise polynomial B-spline curves. In this paper we extend these functionals to Tchebycheffian B-spline curves and then use them to derive fundamental algorithms that are natural generalizations of algorithms for piecewise polynomial B-spline algorithms. Then, as a further example of the utility of this approach, we introduce “geometrically continuous Tchebycheffian spline curves,” and show that a further generalization works for them as well. |
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