Enhancement provides real device camera unit for shooting an image, the image recognition unit for recognizing an object included in the image, the object extracting unit which extracts a feature point of the object, the advertisement information to obtain the ad information corresponding to the feature points of the object, an acquiring unit, combining unit for comparing the feature point of the object and the characteristic information stored in a database called the content information corresponding to the object, and generating a synthesized image by synthesizing the content information and the advertisement information to the image, and It includes a display for displaying the composite image. May provide the advertisement information corresponding to the object extracted from the marker-less based augmented reality technology, by photographing an object using a stereo camera, it is possible to accurately determine the three-dimensional position of the object, the vertical rotation and movement of the object It can be easily tracked for the object, and can be calculated by the three-dimensional coordinates of the object in real time, by using the extracted three-dimensional coordinates match more accurately in real time, the content information and the advertisement information to the real-world information.