Patent ID: 8803800

Claim:
A system for distinguishing among a plurality of user interface elements based on head orientation, said system comprising: a memory area associated with a computing device, said memory area storing a set of facial reference points including coordinates for at least two eyes of a subject, said memory area further storing a plurality of user interface elements for display on a user interface; and a processor programmed to: receive a height of the subject and a distance of the subject from a camera associated with the computing device; calculate a reference point for a nose of the subject based on the height and the distance of the subject from the camera; access the set of facial reference points stored in the memory area; determine a first distance between a first one of the eyes and the nose; determine a second distance between a second one of the eyes and the nose; compare the determined first distance to the determined second distance to calculate a head orientation value, the first distance and the second distance being weighted to calculate the head orientation value; and apply the calculated head orientation value to the user interface to identify at least one of the plurality of user interface elements displayed by the user interface.