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參數(shù)資料
| 型號： | MMJL-29C80F |
| 廠商： | TEMIC SEMICONDUCTORS |
| 元件分類： | 數(shù)字信號處理外設(shè) |
| 英文描述： | 12-BIT, DSP-FAST COSINE TRANSFRM PROCESSOR, CQFP44 |
| 封裝： | MQFP-44 |
| 文件頁數(shù)： | 16/18頁 |
| 文件大?。?/td> | 287K |
| 代理商： | MMJL-29C80F |
29C80F
Rev. D (25 Mar.97)
71
MATRA MHS
Mathematical Equations
Mathematical equation for FDCT
(nb - the FDCT is selected by setting F/I In at VIH)
Let A (i, j) be a pixel matrix where 0 < i (line) < 7 and 0 < j (column) < 7, the transformed matrix B (k, l) where 0 <
k (line) < 7 and 0 < l (column) < 7 is defined by :
B(k, l)
+ 1 4c(k)c(l)
7
i
+0
7
j
+0
A(i, j) cos (2i
) 1) kp
16
cos (2j
) 1) lp
16
where :
c(k) = 1/
√2 if k = 0 otherwise, c(k) = 1
c(l) = 1/
√2 if l = 0 otherwise, c(l) = 1
FCDT
The forward transform equation can be written :
B(k, l)
+ 1 2c(k)
7
i
+0
1 2c(l)
7
j
+0
A(i, j) cos (2j
) 1) lp
16
cos (2i
) 1) kp
16
1
× D forward transform of i line of A (i, j)
Mathematical Equation for IDCT
(nb - the IDCT is selected by setting F/I In at VIL)
Let B (k, l) be a coefficient matrix where 0 < k (line) < 7 and 7 < l (column) < 7, the transformed matrix A (i, j) where
0 < i (line) < 7 and 0 < j (column) < 7 is defined by :
A(i, j)
+ 1 4
7
k
+0
7
l
+0
c(k) c(l) B(k, l) cos (2i
) 1) kp
16
cos (2j
) 1) lp
16
where :
c(k) = 1/
√2 if k = 0 otherwise, c(k) = 1
c(l) = 1/
√2 if l = 0 otherwise, c(l) = 1
IDCT
The inverse transform equation can be written :
A(i, j)
+ 1 2
7
i
+0
c(l) 1 2
7
k
+0
c(k) B(k, l) cos (2i
) 1) kp
16
cos (2j
) 1) kp
16
1
× D inverse transform of 1 line of B (k, l)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MMJL-29C80F/883 | 12-BIT, DSP-FAST COSINE TRANSFRM PROCESSOR, CQCC44 |
| MMJL-29C80F/883 | 12-BIT, DSP-FAST COSINE TRANSFRM PROCESSOR, CQFP44 |
| SMJL-29C80FHXXX | 12-BIT, DSP-FAST COSINE TRANSFRM PROCESSOR, CQFP44 |
| SMJL-29C80F/883 | 12-BIT, DSP-FAST COSINE TRANSFRM PROCESSOR, CQCC44 |
| SMJL-29C80FSC | 12-BIT, DSP-FAST COSINE TRANSFRM PROCESSOR, CQCC44 |
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