Method and apparatus for performing scale-invariant gesture recognition
First Claim
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1. A method comprising:
- tracking an object in two frames of video;
determining differences between a location of the object in one frame of the video and a location of the object in another frame of the video;
obtaining a direction of motion of the object based on the differences; and
recognizing a gesture performed by the object based, at least in part, on the direction of motion of the object;
wherein the differences comprise first order differences between coordinate locations of the object in the two frames of video.
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Abstract
A gesture recognition process includes tracking an object in two frames of video, determining differences between a location of the object in one frame of the video and a location of the object in another frame of the video, obtaining a direction of motion of the object based on the differences, and recognizing a gesture of the object based, at least in part, on the direction of motion of the object.
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Citations
26 Claims
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1. A method comprising:
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tracking an object in two frames of video;
determining differences between a location of the object in one frame of the video and a location of the object in another frame of the video;
obtaining a direction of motion of the object based on the differences; and
recognizing a gesture performed by the object based, at least in part, on the direction of motion of the object;
wherein the differences comprise first order differences between coordinate locations of the object in the two frames of video. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An article comprising:
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a computer-readable medium that stores computer-executable instructions that cause a computer to;
track an object in two frames of video;
determine differences between a location of the object in one frame of the video and a location of the object in another frame of the video;
obtain a direction of motion of the object based on the differences; and
recognize a gesture performed by the object based, at least in part, on the direction of motion of the object;
wherein the differences comprise first order differences between coordinate locations of the object in the two frames of video. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for performing gesture recognition, comprising:
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a camera to capture a video of an object, the object performing a gesture;
a feature extraction mechanism to track the object in frames of the video and to extract a feature sequence based on the frames, the feature sequence including a direction of motion of the object obtained based on differences between a location of the object in one frame of the video and a location of the object in another frame of the video; and
a gesture recognition mechanism to recognize the gesture performed by the object based, at least in part, on the extracted feature sequence;
wherein the differences comprise first order differences between coordinate locations of the object in the two frames of the video. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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Specification