Regular patch 89 For(u,v)∈2， -f明-2o-iaw可 ≤|b,-bB(,w) By solving some constrained minimization problems, b,-b,can be bounded as |b,-b,s6M,1≤is15 Here,M is the second order norm of S,and 6=61=6is=062=63=61=8i0=62=64= 64=d6=d3=分6=6。=6，= Regular patch For , By solving some constrained minimization problems, can be bounded as „ Here, is the second order norm of , and (,) u v ∈Ω 15 1 (, ) (, ) ( ) (, ) i i i i vw vw B vw = S F bb − =− ∑ 15 1 i (, ) i i i B v w = ≤ − ∑ b b i b b i − i ,1 15 b b i i − ≤ ≤ ≤ δ M i 1 11 15 δ === δ δ 0 1 2 3 7 10 12 14 4 δ = δδδ δ δ == = = = M S 1 4 6 13 3 δ == = δ δ 5 589 12 δ = δ δ = =