A system includes at least one dynamically configurable tracking device, receiving a video stream and, adapted for detection and automatic tracking of at least one target by analysis of the video stream; a calculator of a metric performance value starting from a target tracking result supplied by the tracking device; a configuration parameter corrector of the tracking device as a function of the metric performance value; and a dynamic configurator of the tracking device by applying the corrected configuration parameter. It further includes a supplementary reference tracking device, receiving at least one portion of the video stream, and the calculator calculates the metric performance value from a comparison on the video stream portion, of the target tracking result supplied by the tracking device and a reference tracking result supplied by the supplementary reference tracking device.