NED
NUCLi7370AT6
UME-0069-03
48
4.11.3 Auto white balance adjustment
1.Set the target value by sending commands-, e.g.
“WBr684”, “WBg684”,” WBb684”. The
value sent in the command should be 0.9 x the target value (in factory set mode). Auto
white balance adjusts the uncorrected data, so here, it necessary to divide by 1/0.9
(correction output level/no correction output level), the factory correction ratio. In this
case, 760(10-bit value of the target 190DN)
x
0.9 = 684 (the value to be sent by
command)
2. Send the
“WB” command. The data level in the center becomes 190DN, as shown
below.
255
128
192
64
0
7300pixel
out
put
l
evel
(
8bi
t)
190(target value )
Figure 4-11-3-1 output profile after executing auto white balance
[Supplementary note]
It is possible to set the target value of each RGB channel.
The value sent by command should be divided by the correction ratio at the time.
When using User Pixel Correction, it is recommended first to perform Auto white
balancing with pixel correction turned off (Command “C0”), then to obtain the pixel
correction data.
It is possible to read out the gain setting value of each channel with the command
“sta” after auto white balance adjustment, and to adjust gain for each channel
manually through commands.
sta
>OK
>Type=NUCLi7370AT6
>Ver.=0.95
>r0
>g0
>b0
>grfo92
←present Red front half odd pixels channel gain set value