TDA4AL-Q1: ambient brightness detect

Hi Taylar,

Taylar Huang said:

May I know if TI's AE algorithm includes ambient brightness detection?

What is your definition of "ambient" brightness in this context?

Taylar Huang said:

We'd like to use it as input to distinguish different brightness environment and set several target brightness.

Current AE reference code in TDA4 SDK is average based.
It only looks at the average of the sensor raw pixels to adjust the sensor exposure.

https://git.ti.com/cgit/processor-sdk/imaging/tree/algos/ae

What is your definition of "ambient" brightness in this context? -> It may use camera sensor as a luxmeter to detect environment brightness.

For example, lux_index=0 means the most bright that camera sensor can detect, lux_index=1 (3% ambient decrease), lux_index=2 (3%^2 ambient decrease), and so on.

1.03^24=2, so lux_index=24 is around 50% ambient brightness of lux_index=0

Hi Taylar,

Taylar Huang said:

It may use camera sensor as a luxmeter to detect environment brightness.

Thanks for the clarification!

TI's reference AE in SDK does not support that.