function Y=judge_edge(X,n)   %X:每次迭代后PCNN輸出的二值圖像,如何準(zhǔn)確判斷邊界點(diǎn)是關(guān)鍵
[a,b]=size(X);
T=Jiabian(X);
Y=zeros(a,b);
W=zeros(a,b);
for i=2:a+1
    for j=2:b+1
        if(T(i,j)==1)&((T(i-1,j)==0&T(i+1,j)==0)|(T(i,j-1)==0&T(i,j+1)==0)|
            (T(i-1,j-1)==0&T(i+1,j+1)==0)|(T(i+1,j-1)==0&T(i-1,j+1)==0))
            Y(i-1,j-1)=-n;
        end
    end
end