Image Processing Reference
In-Depth Information
x
2
b
24
b
23
b
11
b
22
b
21
x
1
a
4
a
1
a
2
a
3
a
5
a
6
FIGURE 6.11
Example of a 2-D sequential grid structure.
x
2
p
L2
p
R2
p
p
R
p
L
p
L1
p
R1
x
1
x
1L
x
1R
FIGURE 6.12
Interpolation of point p lying between grid line x
1
¼
x
1L
and x
1
¼
x
1R
.
x
2
x
2R1
x
2R2
x
2R1
x
2
x
2L1
x
2L2
x
2L1
where w
R
¼
and w
L
¼
. Once y
R
and y
L
are determined, the
value of the function at point p is obtained by
y
¼
uy
L
þ (
1
u
)
y
R
(
6
:
19
)
where
x
1
x
1R
x
1L
x
1R
u
¼
(
6
:
20
)
The above technique can be easily extended to 3-D and 4-D LUTs with SLI structures.
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