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參數(shù)資料
| 型號： | KS7314 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | Digital Zoom(數(shù)字圖像放大) |
| 中文描述： | 數(shù)碼變焦（數(shù)字圖像放大） |
| 文件頁數(shù)： | 19/28頁 |
| 文件大?。?/td> | 186K |
| 代理商： | KS7314 |
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KS7314
DIGITAL ZOOM
2) Generation of vertical interpolation coefficient
Table 5. Zoom ratio inverse data(vertical) transmitted by system micom
Table 6. An example of generating vertical interpolating coefficient
based on zoom ratio data
Micom supplied
data(ZMIV)
Interpolating
coefficient(
α
)
Interpolating
coefficient(
β
)
Zoom ratio
(256/ZMIV)
ZOOM STEP
00000000
0
1
X1
0
11111111
255/256
1/256
256/255
1
:
:
:
:
:
10000000
128/256
128/256
X2
128
:
:
:
:
:
01000000
64/256
192/256
X4
192
Zoom ratio
data(ZMIV)
Interpolating
coefficient(
α
)
Interpolating
coefficient(
β
)
0
0, 0, 0, 0, 0, . . .
1, 1, 1, 1, 1, . . .
255
0, 255/256, 254/256, 253/256, 252/256, . .
1, 1/256, 2/256, 3/256, 4/256, . .
254
0, 254/256, 252/256, 250/256, 248/256,. .
1, 2/256, 4/256, 6/256, 8/256, . .
:
:
:
128
0, 128/256, 0, 128/256, 0, . . .
1, 128/256, 1, 128/256, 1, . .
:
:
:
64
0, 64/256, 128/256, 192/256, 0, . .
1, 192/256, 128/256, 64/256, 1, . .
The data entered to the vertical interpolating coefficient generation part consist of zoom ratio inverse
data, and vertical sub-pixel hand tremble data, supplied from the EIS micom. The vertical interpolating
coefficient is generated, based on the above data.
The vertical sub-pixel hand tremble data supplied by the EIS micom would look identical to that shown in
Table 4 above. The vertical interpolating coefficient applies equally to luminance and chroma.
The vertical interpolating coefficients
α
and
β
responding to specific zoom ratio are tabulated in Table 6
above. Upon the entry of zoom ratio data, interpolation coefficient
α
, interpolation coefficient
β
are
generated.
The interpolation coefficients shown on Table 3 are generated continuously, and then the zooming
process is implemented after a separate operation of the coefficient and the pixel data, entered in the
zoom processor.
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