METHOD AND SYSTEM FOR CONTACT-FREE HEART RATE MEASUREMENT
First Claim
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1. A method for contact-free heart rate measurement, comprising:
- capturing a pattern information;
judging at least one pixel being a skin-like point in the pattern information to output a flag value, and to obtain a color value corresponding to the pixel in the pattern information;
determining the region of at least one target to be measured from the skin-like points to obtain a pixel information of the at least one target;
calculating statistics on targets in a single picture in the pattern information to obtain at least one color value of at least one target region;
obtaining a motion track of at least one target according to a space relation or appearance similarity between the at least one target region at multiple time points;
taking statistics on the pixel information at multiple time points, to transform the pixel information into frequency domain to obtain signal distribution bands and magnitude thereof; and
calculating a heart rate represented by a band according to a time interval between adjacent pictures in the pattern information.
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Abstract
A method and a system for heart rate measurement are provided. The method includes: capturing at least one image, detecting skin-like points by using a skin color detector, labeling the skin-like points and tracking at least one target to be measured, taking statistics on color values of the target at multiple time points, measuring the heart rate through frequency transformation. The method and the system are easy to setup fully an automatic contact-free measurement of multiple persons'"'"' heart rates at a time, and applicable in multiple regions of human body for heart rate measurement such as head and neck, arm, and palm regions.
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20 Claims
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1. A method for contact-free heart rate measurement, comprising:
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capturing a pattern information; judging at least one pixel being a skin-like point in the pattern information to output a flag value, and to obtain a color value corresponding to the pixel in the pattern information; determining the region of at least one target to be measured from the skin-like points to obtain a pixel information of the at least one target; calculating statistics on targets in a single picture in the pattern information to obtain at least one color value of at least one target region; obtaining a motion track of at least one target according to a space relation or appearance similarity between the at least one target region at multiple time points; taking statistics on the pixel information at multiple time points, to transform the pixel information into frequency domain to obtain signal distribution bands and magnitude thereof; and calculating a heart rate represented by a band according to a time interval between adjacent pictures in the pattern information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system for contact-free heart rate measurement, comprising:
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a video capture module, configured to capture a pattern information comprising videos or images of at least one human skin region of at least one person; and a heart rate computing module, configured to calculate at least one heart rate according to the pattern information. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification