NURDSes Non-uniform Doo-Sabin Surfaces Each vertex is assigned a knot interval(possibly different)for each edge incident to it. After subdivision,new knot intervals can be specified as follows: 配+1=1=论+1 -1=站+1=- Z Huang,G Wang Non-Uniform Recursive Doo-Sabin Surfaces (NURDSes)NURDSes Non-uniform Doo-Sabin Surfaces Each vertex is assigned a knot interval (possibly different) for each edge incident to it. After subdivision, new knot intervals d¯k ij can be specified as follows: d¯0 i,i+1 = d¯−1 i,i−1 = d 0 i,i+1 d¯0 i,i−1 = d¯1 i,i+1 = d 0 i,i−1 . Z Huang, G Wang Non-Uniform Recursive Doo-Sabin Surfaces (NURDSes)