How to get camera's focus value in code?

jkchen46033

Hi,

How to get the focus value in pixels for POE cameras? I am not certain which element in the calibration matrix is the focus. Can someone post coding example please.

Thanks a lot.

lovro

Hi,

Sounds like you mean focal length in pixels, which is part of the camera’s calibration matrix, not the focus setting of the lens. In the matrix, the values called fx and fy are the focal length in pixels (horizontal and vertical).

You can get these values with the DepthAI API by reading the calibration and getting the intrinsics for the resolution you use. Docs with an example here: link

jkchen46033

Thanks.