1. A computer-implemented method of activating a scene model stability indicator of a camera for a scene model of a scene to separate a background and a foreground, said method comprising the steps of: capturing at least one frame in an image sequence; updating a scene model based on at least one of the captured frames from a start time to a current time; determining a scene model stability associated with a current updated scene model; and controlling a display of a scene model stability indicator of a camera while capturing frames, to notify a user that the current updated scene model can be used to separate the foreground from the background in the scene, dependent upon the determined scene model stability.