3D HAND POSTURE RECOGNITION SYSTEM AND VISION BASED HAND POSTURE RECOGNITION METHOD THEREOF
First Claim
1. A vision based hand posture recognition method, comprising:
- receiving an image frame;
extracting a contoured hand image from said image frame;
calculating a gravity center of said contoured hand image;
obtaining contour points on a contour of said contoured hand image;
calculating distances between said gravity center and said multiple contour points; and
recognizing a hand posture according to a first characteristic function of said multiple distances.
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Abstract
A vision based hand posture recognition method and system thereof are disclosed. The method comprises the following steps of receiving an image frame; extracting a contoured hand image from said image frame; calculating a gravity center of said contoured hand image; obtaining contour points on a contour of said contoured hand image; calculating distances between said gravity center and said multiple contour points; recognizing a hand posture according to a first characteristic function of said multiple contour points. In embodiment, the finger number and hand direction of the hand posture can be determined according to the number and location of at least one peak of the first characteristic function.
62 Citations
15 Claims
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1. A vision based hand posture recognition method, comprising:
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receiving an image frame; extracting a contoured hand image from said image frame; calculating a gravity center of said contoured hand image; obtaining contour points on a contour of said contoured hand image; calculating distances between said gravity center and said multiple contour points; and recognizing a hand posture according to a first characteristic function of said multiple distances. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vision based hand posture recognition system, comprising:
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an image capture unit for receiving an image frame; an image processing unit for extracting a contoured hand image from said image frame and calculating a gravity center of said contoured hand image; a data processing unit for obtaining contour points on a contour of said contoured hand image, and calculating distances between said gravity center and said multiple contour points; and a hand posture recognition unit for recognizing a hand posture according to a first characteristic function of said multiple distances. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A 3D hand posture recognition system, comprising:
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a first image capture unit for receiving a first image frame; a second image capture unit, for receiving a second image frame; an image processing unit for extracting a first contoured hand image and a second contoured hand image from said first image frame and said second image frame respectively, and calculating a first gravity center of said first contoured hand image and a second gravity center of said second contoured hand image; a data processing unit for obtaining first contour points on the contour of said first contoured hand image, and obtaining second contour points on the contour of said second contoured hand image, and calculating first distances between said first gravity center and said first multiple contour points, and calculating second distances between said second gravity center and said second multiple contour points; and a hand posture recognition unit for recognizing a first hand posture according to a first characteristic function of said multiple first distances, and recognizing a second hand posture according to a second characteristic function of said multiple second distances, and determining a 3D hand posture according to said first hand posture and said second hand posture. - View Dependent Claims (15)
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Specification