NURDSes Non-uniform Recursive Doo-Sabin Surfaces Refinement rules Repeated averaging: Non-uniform linear subdivision:Pr= E=9i+Pi+piPt pi+qi+1 n-1 F=∑cP j=0 Dual averaging:P;=(P:+Ei-1+Ei+F). ZHuang.G Wang Non-Uniform Recursive Doo-Sabin Surfaces (NURDSes) NURDSes Non-uniform Recursive Doo-Sabin Surfaces Refinement rules Repeated averaging: Non-uniform linear subdivision: pi = d 0 i,i+1 , qi = d 0 i,i−1 Ei = qi+1Pi + piPi+1 pi + qi+1 F = Xn−1 j=0 cjPj Dual averaging: Pi = 1 4 (Pi + Ei−1 + Ei + F) Z Huang, G Wang Non-Uniform Recursive Doo-Sabin Surfaces (NURDSes)