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Position determining techniques using image analysis of marks with encoded or associated position data

  • US 9,881,378 B2
  • Filed: 02/12/2016
  • Issued: 01/30/2018
  • Est. Priority Date: 02/12/2016
  • Status: Active Grant
First Claim
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1. A method for determining position of a mobile device having an imaging device, comprising:

  • obtaining an image of a mark on a known-position object from the imaging device, the mark having an encoded position;

    decoding the mark, using a processor, to derive data about the position of the mark; and

    analyzing appearance of the mark in the image in combination with the derived data about the position of the mark, using the processor, to derive the position of the imaging device,the analyzing step comprising analyzing an angle between an imaging direction of the imaging device and a surface of the mark using the processor.

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