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Power saving approaches to object detection

  • US 9,860,517 B1
  • Filed: 09/24/2013
  • Issued: 01/02/2018
  • Est. Priority Date: 09/24/2013
  • Status: Expired due to Fees
First Claim
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1. A non-transitory computer-readable storage medium including instructions that, when executed by a processor of a computing device, cause the computing device to:

  • receive first image data that represents a set of images of an environment from at least one of a first camera or a second camera of the computing device;

    determine, using the first image data, a first sum of pixel values that represent an estimate of a background image;

    receive second image data that represents a current image captured by the first camera;

    determine, using the second image data, a second sum of pixel values that represents the current image;

    determine a difference between the first sum of pixel values and the second sum of pixel values;

    identify a presence of an object in the current image when the difference between the first sum and the second sum meets or exceeds a threshold value;

    receive third image data that represents the current image captured by the second camera;

    determine a disparity between the object represented in the second image data and the object represented in the third image data;

    determine a distance between the object and the computing device based on the disparity;

    determine features of the object when the distance between the object and the computing device is within a threshold; and

    analyze the features using a facial detection algorithm.

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