pixeldup.m

用小波实现图像去噪的一个程序

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%%%%%%%% 像素复制成小波需要的上一层%%%%%%%%%%%%%%%%%%%%%%%%
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function  W=pixeldup(X,j)
[r,l]=size(X);
n=2^j;
wr=r*n;
wl=l*n;
W=zeros(wr,wl);
for i=1:1:r
    for j=1:1:l
        W((i-1)*n+1:1:i*n,(j-1)*n+1:1:j*n)=X(i,j);
    end
end