Abstract: A method for sharing an application between a first portable terminal and a second portable terminal includes the first portable terminal collecting application information if an application sharing event occurs, generating a marker including the application information, and displaying the marker; and the second portable terminal capturing an image of the marker including application information, recognizing the marker, extracting the application information from the marker, and installing an application corresponding to the application information from the marker. The first portable terminal includes a marker generating unit to generate the marker including the application information, and a display unit to display the marker. The second portable terminal includes a camera unit to capture an image of the marker, a marker recognizing unit to recognize the marker, a marker analyzing unit to extract the application information from the marker, and an application installing unit to install the application.

Abstract: A picture control apparatus provides control of a picture displayed on a display of a mobile terminal according to an action detected through image recognition. A picture control method includes detecting an action from images captured by a camera, and controlling a picture displayed on a display if the detected action is a specific action.

Abstract: In a mobile terminal having a photographing control function based on an image recognition technique and a photographing control system employing an image recognition technique, a specific action is detected from a user image taken by one camera, and the operation of another camera or the processing of an image taken by the camera is controlled when the specific action has been detected, thereby controlling photographing without direct physical manipulation of a user.