Discrete Cosine Transform (DCT)

30
⎪
⎪
⎪
⎪
⎪
⎪
⎪
⎪
⎪
⎪
⎪
⎪
⎩
⎪
⎪
⎪
⎪
⎪
⎪
⎪
⎪
⎪
⎪
⎪
⎨
⎧
+
=
−
=
−
=
+
=
+
=
−
=
+
=
−
=
=
=
2
1
)
7
(
8
1
)
1
(
8
1
2
1
)
5
(
8
1
)
3
(
8
1
2
)
7
(
8
1
)
1
(
8
1
1
)
3
(
8
1
)
5
(
8
1
)
6
(
8
1
)
2
(
8
1
)
6
(
8
1
)
2
(
8
1
)
4
(
8
1
)
0
(
16
1
:
1
7
6
5
4
3
2
1
0
temp
temp
a
F
F
a
temp
temp
a
F
F
temp
F
F
temp
F
F
a
F
F
a
F
F
a
F
a
F
a
B
⎪
⎪
⎪
⎪
⎪
⎩
⎪
⎪
⎪
⎪
⎪
⎨
⎧
=
+
−
=
=
+
−
=
=
=
=
=
7
7
2
6
6
4
6
4
5
5
6
6
2
4
4
3
3
4
2
2
1
1
0
0
)
(
)
(
:
a
b
C
a
C
a
b
C
a
b
C
a
C
a
b
a
b
c
a
b
a
b
a
b
M