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 />
Wiener <strong>Filter<strong>in</strong>g</strong>: m<strong>in</strong>imum of statistical error function<br />
F'(<br />
u,<br />
v)<br />
1<br />
<br />
<br />
H ( u,<br />
v)<br />
<br />
2<br />
2<br />
2<br />
H ( u,<br />
v)<br />
<br />
H ( u,<br />
v)<br />
N(<br />
u,<br />
v)<br />
2<br />
/ F(<br />
u,<br />
v)<br />
<br />
<br />
<br />
R<br />
<br />
N(<br />
u,<br />
v)<br />
F(<br />
u,<br />
v)<br />
2<br />
2<br />
<br />
<br />
f<br />
A<br />
<br />
A<br />
const.<br />
<br />
A<br />
<br />
1<br />
M N<br />
<br />
|<br />
N(<br />
u,<br />
v) |<br />
2<br />
averagenoise power
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