TDA4VM: TDA4VM ISP Tuning DPC question

Hi Jiarong,

Zhang Jia Rong said:

I find that the left half of my image will turn purple, and there will be noise in the image.

Do you mean when you turn on DPC, the output image will look weird?

Could you please share your capture raw and yuv images for this issue?

all_0_pic.zip

Hi, thank you for your reply.

This is the result after I set Threshold at 0~65536 to 0.

Hi Jiarong,

Thanks for sharing!

It looks like you run into the same issue as in the link below.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/942870/processor-sdk-dra8x-tda4x-defect-pixel-correction-configuration/3484059#3484059

Do you enable DPC in the VISS parameters as recommended?

>> You also have to enable DPC in the VISS parameters, can you please check if you are setting vissDrvPrms->enableDpc flag to TRUE.

Hi Jiarong,

Could you please also share your DPC xml file?

DPC is turned on by default.

https://git.ti.com/cgit/processor-sdk/imaging/tree/kernels/hwa/vpac_viss/vx_vpac_viss_target_dcc.c?h=main#n679

In your xml file, all DPC enable bits must be on.