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User interface control based on head orientation

  • US 8,803,800 B2
  • Filed: 12/02/2011
  • Issued: 08/12/2014
  • Est. Priority Date: 12/02/2011
  • Status: Active Grant
First Claim
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1. 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.

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