I am currently working on developing a hybrid Indoor Positioning system where images from an overhead camera will be used to identify and track people.
I am new to the field of visual tracking and a challenge that I have recently faced was choosing a suitable camera/lens combination.
My question is what are the parameters that would help me choose the right camera with the right field of view?
To clarify, I installed a raspberry pi camera module v2 on the ceiling and recorded its video output wirelessly. It seems the field of view was too small for looking at the scene effectively. My conclusion is there must be some techniques/equations which can guide me in choosing the horizontal view distance of the camera in relation to its height from the ground floor.