1. A method of tracking an object within image information, the method comprising: extracting the object from image information; receiving position coordinates of the extracted object; and tracking integrated position information about the object by combining information about the extracted object and the received position coordinates, wherein the tracking comprises: searching a camera database for an installation position of the camera as the camera position coordinates; setting, on the image information, a coordinate system that uses the retrieved camera position coordinates as a reference point; mapping the received position coordinates on the coordinate system; and searching for camera position coordinates of a camera used to generate the image information, as information about the extracted object.