1. A method of selecting an optimal viewing angle position for a camera, the method comprising acts of: determining a first quantitative score for a first viewing angle position of the camera using an overlap amongst pre-selected regions of interest; and adjusting the viewing angle position from the first viewing angle position towards at least one second viewing angle position to adjust the overlap; determining the quantitative score for each of the at least one second viewing angle position; and selecting the optimal viewing angle position based on the determined quantitative scores, wherein the greater the overlap between the regions of interest the lower the quantitative scores.