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Method and system for determining reference points in video image frames

  • US 9,386,276 B2
  • Filed: 07/26/2012
  • Issued: 07/05/2016
  • Est. Priority Date: 03/23/2012
  • Status: Active Grant
First Claim
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1. A method performed by a control unit (CU) for aligning two or more video image frames received from two or more video cameras at an endpoint, the endpoint communicably connected to the CU via a communication network, comprising:

  • receiving two or more reference image frames from the endpoint; and

    determining two or more reference points, each reference point located in at least two of the two or more video image frames, the two or more reference points derived from location coordinates of a same spot of a projected reference image captured in the two or more reference image frames,wherein the projected reference image includes a plurality of patterns, andwherein the same spot corresponds to one of the plurality of patterns.

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