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Systems, devices and methods for tracking objects on a display

  • US 9,454,827 B2
  • Filed: 02/20/2014
  • Issued: 09/27/2016
  • Est. Priority Date: 08/27/2013
  • Status: Expired due to Fees
First Claim
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1. A method of tracking an object with an electronic device, the method comprising:

  • defining a reference value based on a first average light intensity of pixels in a first region of a first image frame comprising the object;

    determining a second average light intensity of pixels in a second region of a second image frame comprising the object, the second average light intensity of pixels being different than the first average light intensity of pixels, and the second image frame captured after the first image frame;

    calculating a difference between the reference value of the first region in the first image frame and the determined second average light intensity of the second region in the second image frame;

    redefining the reference value to produce a redefined reference value, based on the average light intensity of pixels in the second region of the second image frame, in response to the calculated difference being less than an intensity limit;

    applying a gain filter to the region of the second image frame to produce a filtered image frame;

    tracking the object using the pixels in the filtered image frame; and

    using the redefined reference value for tracking the object in a third image frame, wherein the third image frame is captured after the second image frame.

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