TDA4AL-Q1: IMX728 WDR halo issue

Taylar Huang

Part Number: TDA4AL-Q1

Tool/software:

Dear TI experts,

According to TDA4AL-Q1: IMX728_Halo issue - Processors forum - Processors - TI E2E support forums, we cowork with Sony sensor to do some test.

Sony's AWB algorithm has RGB clipping method to improve this halo issue. May I know if TI also has this kind of clipping method?

21 days ago

0 Christina Kuruvilla 21 days ago

TI__Expert 4730 points

Hi,
Due to a US holiday, the engineer responsible is currently out of office. Apologies for the delay, and thank you for your patience
Warm regards,
Christina

0 Gang Hua 19 days ago

TI__Guru 59410 points

Hi Taylar,

Taylar Huang said:
Sony's AWB algorithm has RGB clipping method to improve this halo issue. May I know if TI also has this kind of clipping method?

I am not sure what kind of clipping is required from TDA4 side.
Could you please explain?

Once the raw image has the wrong color already and it cannot be fixed at TDA4 side.

0 Taylar Huang 11 days ago in reply to Gang Hua

Intellectual 400 points

like this method:

...

0 Taylar Huang 11 days ago in reply to Taylar Huang

Intellectual 400 points

0 Gang Hua 11 days ago in reply to Taylar Huang

TI__Guru 59410 points

Hi Taylar,

Taylar Huang said:
like this method:

It looks like that the clipping is implemented at the sensor side before WDR multi-frame merging.

TDA4 only sends the AWB gains over to sensor.
No clipping can be done on TDA4 side.