cc
H=[0 -0.1768 0.3536 1.0607 0.3536 -0.7168];
G=[0 0.3536 -0.7071 0.3536 0 0];
for m1=1:136
    B1h=conv2(X1(m1,:),H);
    X1h(m1,:)=B1h;
    B1g=conv2(X1(m1,:),G);
    X1g(m1,:)=B1g;
    B2h=conv2(X2(m1,:),H);
    X2h(m1,:)=B2h;
    B2g=conv2(X2(m1,:),G);
    X2g(m1,:)=B2g;
end

for n1=1:259
    Z1h=X1h(:,n1)';
    C1hh=conv2(Z1h,H);
    X1hh(:,n1)=C1hh';
    C1hg=conv2(Z1h,G);
    X1hg(:,n1)=C1hg';
    Z1g=X1g(:,n1)';
    C1gh=conv2(Z1g,H);
    X1gh(:,n1)=C1gh';
    C1gg=conv2(Z1g,G);
    X1gg(:,n1)=C1gg';
    Z2h=X2h(:,n1)';
    C2hh=conv2(Z2h,H);
    X2hh(:,n1)=C2hh';
    C2hg=conv2(Z2h,G);
    X2hg(:,n1)=C2hg';
    Z2g=X2g(:,n1)';
    C2gh=conv2(Z2g,H);
    X2gh(:,n1)=C2gh';
    C2gg=conv2(Z2g,G);
    X2gg(:,n1)=C2gg';
end
figure
subplot(2,2,1)
image(X1hh)
colormap(map)
title('近似圖像')
subplot(2,2,2)
image(X1hg)
colormap(map)
title('水平細節')
subplot(2,2,3)
image(X1gh)
colormap(map)
title('垂直細節')
subplot(2,2,4)
image(X1gg)
colormap(map)
title('對角細節')
figure
subplot(2,2,1)
image(X2hh)
colormap(map)
title('近似圖像')
subplot(2,2,2)
image(X2hg)
colormap(map)
title('水平細節')
subplot(2,2,3)
image(X2gh)
colormap(map)
title('垂直細節')
subplot(2,2,4)
image(X2gg)
colormap(map)
title('對角細節')