TDA4APE-Q1: ISP tunning for a 2-frame-combined WDR sensor

Hua Jianxiong

Part Number: TDA4APE-Q1

Hi TI experts,

I'm working on TDA4APE with sdk11.0 to do ISP tunning for a raw12 traffic sensor (OV OG12A sensor). The images of this sensor are combined of HCG and LCG frames, and the PWL in sensor is 16 bit to 12 bit.

However, in DCC tool, I cannot set decompand curve from 12 bit to 16 bit. The WDR modual only supports 12 bit to 20/24 bit settings. So, how should I solve this problem?

Looking forward to your reply,

Jianxiong Hua

10 months ago

0 Doredla Sudheer Kumar 10 months ago

TI__Guru* 81870 points

Hi,

The expert assigned to your query is currently on vacation. Please expect a response by early next week.

Best Regards,
Sudheer

0 Gang Hua 10 months ago in reply to Doredla Sudheer Kumar

TI__Guru 68790 points

Hi Jianxiong,

Hua Jianxiong said:
I'm working on TDA4APE with sdk11.0 to do ISP tunning for a raw12 traffic sensor (OV OG12A sensor). The images of this sensor are combined of HCG and LCG frames, and the PWL in sensor is 16 bit to 12 bit.

Do you mean sensor output is in 12-bit companded format, the full DR is only 16-bit?

Hua Jianxiong said:
However, in DCC tool, I cannot set decompand curve from 12 bit to 16 bit. The WDR modual only supports 12 bit to 20/24 bit settings. So, how should I solve this problem?

DCC tuning tool does not have that option.

You may try the python script and use 16 here.

https://git.ti.com/cgit/processor-sdk/imaging/tree/tools/default_DCC_profile_gen/configs/X5B_properties.txt?h=main#n20

"pre-gamma" value would be 100 for 16-bit HDR.

https://git.ti.com/cgit/processor-sdk/imaging/tree/tools/default_DCC_profile_gen/configs/X5B_properties.txt?h=main#n36

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TDA4APE-Q1: ISP tunning for a 2-frame-combined WDR sensor