According to one or more embodiments of the method of determining zone usage according to the present disclosure, after obtaining the detection zone, the computing device can determine the object flow and whether there are any abnormal activities of the objects in the monitoring site. Furthermore, the computing device can also determine whether the camera is shifted, and notify the monitoring center accordingly. When the camera is shifted, the accuracy of the detection zone is not greatly affected even when the monitoring personnel doesn't adjust the shifted camera immediately.

The present disclosure has been disclosed above in the embodiments described above, however it is not intended to limit the present disclosure. It is within the scope of the present disclosure to be modified without deviating from the essence and scope of it. It is intended that the scope of the present disclosure is defined by the following claims and their equivalents.