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Image based motion gesture recognition method and system thereof

  • US 8,373,654 B2
  • Filed: 04/29/2010
  • Issued: 02/12/2013
  • Est. Priority Date: 04/29/2010
  • Status: Active Grant
First Claim
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1. An image based motion gesture recognition method, comprising steps of:

  • receiving image frames;

    performing a hand posture detection according to said image frames, to obtain a first hand posture;

    determining whether said first hand posture matches a predefined starting posture;

    if said first hand posture matches said predefined starting posture, performing a movement tracking according to hand locations on said image frames, to obtain a motion gesture;

    performing said hand posture detection according to said image frames during said movement tracking, to obtain a second hand posture;

    determining whether said second hand posture matches a predefined ending posture; and

    if said second hand posture matches said predefined ending posture, stopping said movement tracking;

    wherein the step of performing said hand posture detection further comprises;

    detecting whether a hand image exists in at least one of said image frames;

    obtaining a contoured hand image according to said hand image if said hand image exists in at least one of said image frames;

    determining a hand direction and a finger number according to said contoured hand image, wherein the step of determining said finger number further comprises steps of;

    performing a palm orientation calculation to obtain a gravity center of said contoured hand image;

    performing a palm cut on said contoured hand image according to said gravity center, to obtain a cut hand image; and

    determining said finger number according to said cut hand image;

    recognizing said first hand posture or said second hand posture according to said hand direction and said finger number.

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