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參數(shù)資料
| 型號(hào)： | LR38269 |
| 廠商： | Sharp Corporation |
| 元件分類： | 數(shù)字信號(hào)處理 |
| 英文描述： | Digital Signal Processor for Color CCD Cameras |
| 中文描述： | 數(shù)字信號(hào)處理器的彩色CCD相機(jī) |
| 文件頁數(shù)： | 16/20頁 |
| 文件大?。?/td> | 93K |
| 代理商： | LR38269 |
q
Weighted data 3
I (or Q) data comes from the following equation
using the weighting data from address 40h to
address 43h.
{(I
11
+ I
12
π + I
14
) ÷ 4 x address 40h
+ (I
21
+ I
22
π + I
24
) ÷ 4 x address 41h
:
+ (I
41
+ I
42
π + I
44
) ÷ 4 x address 43h} ÷ 256
= Weighted data 3
The sum from the data of address 40h to the data
of address 43h shall be 256.
w
Weighted data 4
Weighting area can be selected by address 45h.
(see
"NOTES" in Gamma Characteristic Option
.
)
Weighted data comes from averaged data in
selected area.
e
White balance area setting
The sum of I and Q can be regulated by the
luminance level and the color level.
Setting target zone : address 47h to address 4Ah
White balance data less than the data of address
51h and address 52h changes the target zone of
auto white balance to the zone by the data from
address 4Bh to 4Eh.
Above regulation comes from the following equation
along the luminance level.
Setting available luminance level range :
Highest luminance level limiter =
address 3Bh + [{address 3Eh x H peak level +
(256 – address 3Eh) x exposure control data} ÷
256 – address 3Dh] x address 3Fh
Lowest luminance level limiter =
address 3Ch + [{address 3Eh x H peak level +
(256 – address 3Eh) x exposure control data} ÷
256 – address 3Dh] x address 3Fh
Auto Color Matrix Compensation
Color matrix compensation can be done by
R – Y = R – Y ± (Data 1 x B – Y)
B – Y = B – Y ± (Data 2 x R – Y)
Above data comes from below equation along the
variation of color temperature.
Data 2 =
address 55h + {(working R white balance data –
address 25h + (address 26h – working B white
balance data)} ÷ 32 x address 53h ÷ 8
Data 2 =
address 56h + {(working R white balance data –
address 25h) + (address 26h – working B white
balance data)} ÷ 32 x address 54h ÷ 8
Auto Color Level Compensation
Color level can be auto-controlled by the following
equation along the variation of color temperature.
B – Y level =
address 30h + {(working R white balance data –
address 25h) x address 22h + (address 26h –
working B white balance data) x address 23h} ÷ 32
x address 2Eh ÷ 8
R – Y level =
address 31h + {(working R white balance data –
address 25h) x address 22h + (address 26h –
working B white balance data) x address 23h} ÷ 32
x address 2Fh ÷ 8
LR38269
16
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