Digital Image Processing
Digital Image Processing
Digital Image Processing
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Spatial Filtering<br />
1차원 filtering의 다른예: mask 크기가 1x3<br />
f<br />
w<br />
g<br />
g(<br />
x,<br />
y)<br />
= ∑ 1 w(0,<br />
t)<br />
f ( x,<br />
y + t)<br />
t = − 1<br />
g ( 0,1) = w(0,<br />
−1)<br />
× f (0,0) + w(0,0)<br />
× f (0,1) + w(0,1)<br />
× f (0,2)<br />
-1 2 -1<br />
g ( 0,2) = w(0,<br />
−1)<br />
× f (0,1) + w(0,0)<br />
× f (0,2) + w(0,1)<br />
× f (0,3)<br />
-1 2 -1<br />
5/46<br />
Spatial Filtering<br />
2차원 filtering의 예: mask 크기가 3x3<br />
1<br />
1<br />
g(<br />
x,<br />
y)<br />
= ∑ ∑w(<br />
s,<br />
t)<br />
f ( x+<br />
s,<br />
y + t)<br />
s = − 1 t = − 1<br />
g(1,1)<br />
= w(<br />
−1,<br />
−1)<br />
× f (0,0) + w(<br />
−1,0)<br />
× f (0,1) + w(<br />
−1,1)<br />
× f (0,2)<br />
+ w(<br />
0, −1)<br />
× f (1,0) + w(<br />
0,0) × f (1,1) + w(<br />
0,1) × f (1,2)<br />
+ w(<br />
1, −1)<br />
× f (2,0) + w(<br />
1,0) × f (2,1) + w(<br />
1,1) × f (2,2)<br />
g(3,8)<br />
= w(<br />
−1,<br />
−1)<br />
× f (2,7) + w(<br />
−1,0)<br />
× f (2,8) + w(<br />
−1,1)<br />
× f (2,9)<br />
+ w(<br />
0, −1)<br />
× f (3,7) + w(<br />
0,0) × f (3,8) + w(<br />
0,1) × f (3,9)<br />
+ w(<br />
1, −1)<br />
× f (4,7) + w(<br />
1,0) × f (4,8) + w(<br />
1,1) × f (4,9)<br />
6/46
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