imageex(limage,heightx2,widthx2);A=size(height,width);B=zeros(m+h*2,n+w*2); %创建个扩展大小的0矩阵B(h+1:h+m,w+1:w+n)=A(m,n);
%将原矩阵填入中间位置B(1:h,w+1:w+n)=A(1,:);%大矩阵的上面扩展行赋值为原矩阵的第一行B(h+m+1:h*2+m)=A(m,:);%大矩阵的下面扩展行赋值为原矩阵的最后一行B(h+1:h+m,1:w)=A(:,1);%大矩阵的左面扩展列赋值为原矩阵的最左一列B(h+1:h+m,w+n+1:n+w*2)=A(:,n)%大矩阵的右...
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