From smartphone to virtual window

This paper presents a prototype of virtual transparency on a hand-held device. The prototype is restricted to such device with no additional material to show that a semblance of virtual transparency can be achieved with today´s smartphones and has been designed be as simple as possible to use. The user´s head is tracked using the front camera and the eyes co-ordinates are estimated from the head position. The area to be displayed is then computed from the these coordinates, an estimation of the distance head-phone and phone-scene, as well as the phone and lens specifications. It provides a realistic illusion of virtual transparency, not an geometrically accurate render of the scene, and still works in non-optimal situations (non-flat scene).