TRACKING APPARATUS AND TRACKING METHOD

The invention provides a tracking apparatus and a tracking method by which an imaging object can be set without any special manual operation by a user. An imaged image is supplied to an imaging object setting section via an imaging object processing section. In the imaging object setting section, a motion detection section calculates a difference value between images of successive two frames and detects a motion of an image based on the difference value. Then, a portion of the image from which the motion is detected is set as an imaging object to be tracked.