A proposal for a person/photograph distinction method with applications to security systems

We propose an automatic identification system wherein a user´s face is captured by a camera in order to identify him/her. By using an illumination difference image, which is made of light coming from the right and left sides, our system can distinguish between a real person and a photograph. We describe an algorithm that detects whether the object facing the camera is planar (in the case of a photograph) or not (in the case of a real person). We propose the technique of performing person-photograph distinction by the direction image features.