Using camera PWM out

[Cuog]

I have been sriting a basic code for the camera which requires the camera to use its demo mode to track colors, i then triangulate the position of the object that the camera is tracking and tell how far away it is, my only problem is that my code is designed to use the PWM input that the camera sends to the servos to move it so that it stays pointing at them,

Basically how do I get a pwm input into the RC or do I need to attach a potentiometer to the camera's mount and measure it that way?

Thanks for the help,
Cuog