TDA4VM: What is the minimum size (pixel) of surround view calibration chart?

Hello, 

Thanks for your question. I'm investigating these details about the surround view application.

Regards,
Sarabesh S.

Thanks for your kindly support in advance. This information would be very helpful for me to minimize the calibrating space.

--Joy

Hi Joy,

No problem, the surround view app support is limited and I haven't gotten a chance to discuss with the team on this topic. I will try to get back to you with more information tomorrow. If not, I will provide an update next week.

Thank you,
Sarabesh S.

Looking forward to your reply

Joy

Hi Joy,

Will provide update next week.

Thanks,
Sarabesh S.

Looking forward to your reply

Joy

Hi Joy, 

Still discussing with experts. It seems like this depends on the distance of the field on the chart because that will determine how large the pixels need to be to be able to accurately depict the output image. Will update with more findings as I get them.

Thank you,
Sarabesh S.

I think that the algorithm should not care about the actual size of the chart (in millimeters), but only about the number of pixels (maybe 20pixel, or 40pixel?) the chart occupies in the camera image

For example, the black square of my chart is 112mm and the chart position is shown below:

Here is one of the camera view (1920x1080):

I just wonder what is the minimum pixel of the black square in the camera view is allowed to do surround view calibration and would work.

Thanks in advance.

Joy