TDA4VE-Q1: TDA4VE

What kind of optimization are you looking for?
H3A is a H/W IP (no source code).

Because H3A can only count 10bits, the accuracy is not high. At present, we want to realize the function of calculating bv and ev, and we need to obtain the raw data input to H3A after pwl decompression. Can you give us some instructions on how to realize this function? thank you

Hi,

I don't quite understand what you are asking for.

zheng_yongjia said:

Because H3A can only count 10bits, the accuracy is not high.

Yes, this is H/W limitation.

zheng_yongjia said:

At present, we want to realize the function of calculating bv and ev

I suppose you mean deciding sensor exposure.
What do "bv" (?) and "ev" (exposure value?) stand for?

zheng_yongjia said:

we need to obtain the raw data input to H3A after pwl decompression

You won't have access to this on H/W.
What do you need this for?

zheng_yongjia said:

Can you give us some instructions on how to realize this function?

The function of deciding "bv" and "ev"?

We want to calculate the brightness of the current environment (not the brightness of the current picture). We need to obtain the original raw statistical data, exposure time and gain to convert the brightness of the current environment, so as to ensure the accuracy, so that we can judge different scenes later (such as tunnel scenes, sunny scenes, cloudy scenes and night scenes). Different parameters can be used in different scenes to ensure the accuracy of the effect.

At present, the accuracy of statistical data of H3A can't meet the accuracy of environmental brightness that we want to calculate at present.

zheng_yongjia said:

We need to obtain the original raw statistical data,

What kind of statistical data are you looking for?

It looks like you will have to use the raw sensor image to do the statistics in DPS/ARM.
Another possibility is to use sensor embedded data if it supports the kind of statistic you need.

We need raw data after pwl decompression.Excuse me, where can I get it? We want to get the raw data after pwl decompression to calculate the brightness and ensure the accuracy of the brightness.