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Two-dimensional method and system enabling three-dimensional user interaction with a device

  • US 8,686,943 B1
  • Filed: 05/14/2012
  • Issued: 04/01/2014
  • Est. Priority Date: 05/13/2011
  • Status: Expired due to Fees
First Claim
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1. A method to enable at least one user object interaction, user-made in a three-dimensional hover zone, with a device, said interaction creating a detectable event useable by said device, where at least a portion of said user object is representable by at least one landmark, the method including the following steps:

  • (a) disposing a first camera having a first FOV and disposing a second camera having a second FOV such that intersecting said first FOV and second FOV define said three-dimensional hover zone, said first camera having a first pixel sensor array with x-columns and y-rows and a first resolution, and said second camera having a second pixel sensor array with a second resolution substantially equal to said first resolution;

    (b) obtaining a first two-dimensional image from said first camera of at least a portion of said user object within said three-dimensional hover zone, and obtaining a second two-dimensional image from said second camera of at least a portion of said user object in said three-dimensional hover zone, wherein said first image comprises a first set of pixel data, and said second image comprises a second set of pixel data, where a number N represents a maximum total data points acquired by said first and by said second set of pixel data;

    (c) analyzing said first and second set of pixel data obtained at step (b) to identify in said pixel data potential two-dimensional locations of landmark data points on said user object, such that data reduction to less than about 1% N occurs;

    (d) determining for at least some said two-dimensional locations identified in step (c) three-dimensional locations of potential landmarks on said user object, wherein remaining data is less than about 0.1% N;

    (e) using three-dimensional locations determined at step (d) and using dynamic information for data remaining after step (d) to further reduce a number of three-dimensional locations of potential landmarks on said user object to less than about 0.01% N, each said potential landmark locations being characterizable by confidence probabilities as being a type of user object;

    wherein three-dimensional data following step (e) is outputtable to said device to affect at least one device parameter responsive to detected user interaction.

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