Image Restoration / Filtering in Frequency Domain
Image Restoration / Filtering in Frequency Domain
Image Restoration / Filtering in Frequency Domain
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<strong>Restoration</strong> <strong>in</strong> <strong>Frequency</strong> Doma<strong>in</strong><br />
g<br />
<br />
Hf<br />
η<br />
Problem: to <strong>in</strong>verse H<br />
Constra<strong>in</strong>ed Least Squares method<br />
C<br />
<br />
2<br />
<br />
2<br />
f ( x,<br />
y)<br />
smoothness m<strong>in</strong>imum .<br />
<strong>Frequency</strong> Doma<strong>in</strong> Solution:<br />
H ( u,<br />
v)*<br />
<br />
F' ( u,<br />
v)<br />
<br />
G(<br />
u,<br />
v)<br />
2 2<br />
<br />
H ( u,<br />
v)<br />
P(<br />
u,<br />
v)<br />
<br />
0<br />
p(<br />
x,<br />
y)<br />
<br />
<br />
<br />
1<br />
<br />
0<br />
1<br />
4<br />
1<br />
0<br />
1<br />
<br />
<br />
laplac<strong>in</strong> mask<br />
0
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