What is fx, fy, cx, cy of IMX219 160FOV CSI Camera?

I am two CSI IMX219 160FOV cameras. I want to know that what is fx, fy, cx, cy of this camera?
fx - x-axis focal length of camera in pixels
fy - y a-axis focal length of camera in pixels
cx - x-axis optical center of camera in pixels
cy - y-axis optical center of camera in pixels

What is formula you are using to calculate it ?
How do I can calculate it?
Please do tell me the exact values.

please do answer me as soon as possible, I will be very thankful to you.