1. A measuring device for tracking an object, said device comprising: an image data input for inputting an image of thetracking object snapped by a camera; a tracker including a frame for extracting image data in predetermined size from the image, wherein said frame is moved within the image and whereinimage data included within said frame is extracted from the image in each moved position andthe number of pixels having a hue feature of the tracking object is counted based upon the extracted image data anda position of said frame in which said counted number of pixels is maximum is determined for every hue feature; and the position of the tracking object is calculated based upon the determined position of said frame.