8.Features
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The auto white balance feature can also select the color temperature. When the color temperature of the
selection is "Adaptive", the data in ROI always adjusting the red, green and blue to the same. When
selecting the specific color temperature, the camera adjusts the factor according to the light source, so
that the hue of the ROI is the same as the hue of the light source. That is: high temperature is cold, low
color temperature is warm.
The auto white balance feature is only available on color sensors.
8.3.6.
Lookup Table
When the analog signal that is read out by the sensor has been converted via ADC, Generally, the raw
data bit depth is larger than 8bits, there are 14bit, 12bit, 10bit or etc. When selecting the output data bit
depth is 8bit, you should convert the 12bit data to 8bit data. The lookup table can implement the mapping
from 12bit to 8bit.
The lookup table can be a linear lookup table or a non-linear lookup table. The typical linear lookup table
implements the selection of 8 bits, and Figure 8-21 is an example of the linear lookup table choosing
different 8bits.
Figure 8-21 Linear lookup table