21
Black Level
3.9
Black level helps you adjust the gray value offset of the output data. The gray value offset determines
the average gray value when the sensor is not sensitive. For different ADC bit depth modes, the black
level parameter ranges of the camera are different.
To configure black level, set the
Black Level
value.
Black level settings
Figure 3-33
Gain
3.10
The camera gain is divided into analog gain and digital gain. The analog gain can amplify the analog
signal, and the digital gain can amplify the signal after converting analog signals to digital signals.
Analog gain amplifies and enhances the signal. The larger the parameter, the stronger the gain, the
brighter the image, and the more the noise. The digital gain can amplify the signal after
analog-to-digital conversion. Similar to analog gain, the larger the parameter, the stronger the gain,
the brighter the image, and also more noise (more noise than analog gain).
3.10.1
Analog Gain
You can set gain parameters in three ways: Off, once, and continuous.
Table 3-3
Different ways of setting gain
Way
Description
Off
Adjust the analog gain according to the value defined in
GainRaw
.
Once
Automatically run analog gain for a period of time according to the scenario, and
then stop.
Continuous Automatically and continuously adjust the analog gain according to the scenario.
Select GainAuto mode
Figure 3-34
GainAuto
is only available for certain models. For details, see the specifications of the corresponding
product.
3.10.2
Digital Gain
Configure
DigitalShift
. The range is 0–4. The larger the value, the stronger the gain, the brighter the
image and the more the noise.
Digital gain
Figure 3-35
