Overview

The responses to the spectrum (R, G, and B components) are different between sensors and human eyes. A CCM is used to correct the spectrum response cross effect and spectral responsivity, ensuring that the colors of captured images are the same as visual colors.

When the IPS is working, the firmware adjusts the saturation based on the current illumination to dynamically adjust the CCM coefficients. The following figure shows the CCM matrix.

Key concepts:

• Color reproduction: A CCM is used to correct the spectrum response cross effect and spectral responsivity, ensuring that the colors of images processed by the ISP are the same as visual colors.
• Saturation: It is also called color purity. The saturation depends on the ratio of the chromatic component to the achromatic component (gray). A greater chromatic component ratio indicates the higher saturation, and a greater achromatic component ratio indicates the lower saturation.