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T-spline simplification and local refinement
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DOI：10.1145/1015706.1015715.png)
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A typical NURBS surface model has a large percentage of superfluous control points that significantly interfere with the design process. This paper presents an algorithm for eliminating such superfluous control points, producing a T-spline. The algorithm can remove substantially more control points than competing methods such as B-spline wavelet decomposition. The paper also presents a new T-spline local refinement algorithm and answers two fundamental open questions on T-spline theory.
Keyword:
NURBS surfaces
T-splines
subdivision surfaces
local refinement
knot removal
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