Analysis of algorithms generalizing B-spline subdivision

被引:77
作者
Peters, J [1 ]
Reif, U
机构
[1] Purdue Univ, Dept Comp Sci, W Lafayette, IN 47907 USA
[2] Univ Stuttgart, Inst Math A, D-70569 Stuttgart, Germany
关键词
subdivision; arbitrary topology; characteristic map; Doo-Sabin algorithm; Catmull-Clark algorithm; B-spline;
D O I
10.1137/S0036142996304346
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
A new set of tools for verifying smoothness of surfaces generated by stationary subdivision algorithms is presented. The main challenge here is the verification of injectivity of the characteristic map. The tools are sufficiently versatile and easy to wield to allow, as an application, a full analysis of algorithms generalizing biquadratic and bicubic B-spline subdivision. In the case of generalized biquadratic subdivision the analysis yields a hitherto unknown sharp bound strictly less than 1 on the second largest eigenvalue of any smoothly converging subdivision.
引用
收藏
页码:728 / 748
页数:21
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