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TRUE SPACE TRACKING OF AXISYMMETRIC OBJECT FLIGHT USING DIAMETER MEASUREMENT

  • US 20150103168A1
  • Filed: 12/22/2014
  • Published: 04/16/2015
  • Est. Priority Date: 04/03/2013
  • Status: Active Grant
First Claim
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1. An electronic device comprising:

  • a housing;

    a wireless network interface;

    a camera lens coupled to an exterior of the housing;

    an input interface; and

    a processor communicatively coupled to the input interface and a digital image sensor disposed within an interior of the housing wherein the digital image sensor receives light which passes through the camera lens;

    the processor configured to

         1) receive a plurality of 2-D digital images from the digital image sensor,

         2) output the plurality of 2-D digital images to the display,

         3) select a portion of the plurality of 2-D digital images wherein the portion is selected based upon at least whether an axisymmetric object in free flight used in a play of a game is identifiable,

         4) receive input data from the input mechanism which is used to determine an orientation of the camera lens in a first reference frame;

         5) based upon the orientation of the camera lens in the first reference frame, transform first pixel data in each of the portion of the plurality of 2-D digital images from the first reference frame associated with a current orientation of the camera lens to second pixel data associated with a second reference frame;

         6) determine a plurality of first pixel lengths across the axisymmetric object in multiple directions of the second pixel data in each of the portion of the plurality of 2-D digital images to account for motion blurring and light blooming effects;

         7) based upon the plurality of first pixel lengths, determine a first characteristic pixel length of the axisymmetric object in each of the portion of the plurality of 2-D digital images;

         8) based upon first characteristic pixel length, determine distances from the camera lens to the axisymmetric object in physical space in each of the portion of the plurality of 2-D digital images;

         9) determine a center of the axisymmetric object in the second pixel data in each of the 2-D digital images;

         10) determine a plurality of second pixel lengths which measure changes in the center of the axisymmetric object between each of the portion of the plurality of 2-D digital images;

         11) based upon the plurality of second pixel lengths and the distances from the camera lens, determine a 3-D trajectory of the axisymmetric object as a function of time in physical space,

         12) select one of the plurality of 2-D digital images,

         13) render a path showing the 3-D trajectory of the axisymmetric object into the selected one of the plurality of 2-D digital images and

         14) output to the display a new 2-D digital image including the path of the 3-D trajectory.

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