Confidential
Until : Indefinite
Specifications
MN34120PAJ
Total Page
Page
96
25
2015/10/01
Generalplus Technology Inc.
Enactment Revision
Panasonic Semiconductor Solutions Co., Ltd.
1.4.9 Luminance shading
Measure the Gr and Gb output signal of a measurement area shown in the Figure 1.4.9 below in the
standard illuminance at the standard imaging state. Measure the average value for each block divided
active pixel area into 15 of the horizontal direction and 11 of the vertical direction. Determine the minimum
value (LSmin) of the results. The center average (LScave) is the average value of A(7,5). The luminance
shading is determined using the following formula.
Luminance shading = ( LScave - LSmin ) / LScave × 100
4712
76
×15 blocks
88
3512
317
3590
3487
7
32
24
29
4620
15
OB area
・・・
・・・
:
:
A(0,0) A(1,0) A(2,0)
A(13,0) A(14,0)
A(0,10)
A(0,9)
A(0,1)
A(0,2)
A(14,10)
A(13,10)
Measurement area
Figure 1.4.9 Measurement area of luminance shading
1.4.10 Color shading
Measure the sensor output signal of a measurement area shown in the Figure 1.4.9 below in the standard
illuminance at the standard imaging state. Measure the color average value for each block divided active
pixel area into 15 of the horizontal direction and 11 of the vertical direction. In each block, the average value
of R pixel is Rx, the average value of Gr and Gb pixel is Gx, and the average value of B pixel is Bx. In the
center block A(7,5), the average value of R is Rc, G is Gc, and B is Bc. Determine the values of Chroma
and Hue using the following formula.
CRx = ( Rx / Rc – Gx / Gc ) × 100
CBx = ( Bx / Bc - Gx / Gc ) × 100
Chroma = max ( SQRT ( CRx * CRx + CBx * CBx ) )
Hue = SQRT ((CBmax - CBmin)*(CBmax - CBmin) + (CRmax - CRmin)*(CRmax - CRmin))