We present a second order smooth filling of an n-valent Catmull-Clark spline ring with n biseptic patches. While an underdetermined biseptic solution to this problem has appeared previously, we make several advances in this paper. Most notably, we cast the problem as a constrained minimization and introduce a novel quadratic energy functional whose absolute minimum of zero is achieved for bicubic polynomials. This means that for the regular 4-valent case, we reproduce the bicubic B-splines. In other cases, the resulting surfaces are aesthetically well behaved. We extend our constrained minimization framework to handle the case of input mesh with boundary. © 2008 The Author(s) Journal compilation © 2008 The Eurographics Association and Blackwell Publishing Ltd.
CITATION STYLE
Loop, C., & Schaefer, S. (2008). G2 tensor product splines over extraordinary vertices. In Eurographics Symposium on Geometry Processing (Vol. 27, pp. 1373–1382). Eurographics Association.
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