Heart rate measuring method based on image capture

Abstract

The invention relates to a heart rate measuring method based on image capture, and relates to a heart rate measuring method, which solves the problems of inconvenience for measurement in the conventional electrocardiogram contact measuring method and low measuring accuracy in a method for measuring indirectly by using a sensor. The method comprises the following steps of: acquiring a characteristic vector T of detection space and a threshold value epsilon converted towards a binary image; acquiring a heart rate detection video; extracting all frame images F1, F2,...,Fx from the video; acquiring a grayscale image Gx of the Fx in the detection space; acquiring a grayscale image Ry of a differential value of Gx and G1; extracting a variation region My of each blood vessel image; extracting a value Ky of the variation region in each image; extracting a variable characteristic value from the variable Ky to acquire a period Tr; and acquiring a heart rate value HR. By the heart rate measuring method, the defect of high noise caused by the contact of the conventional measuring instrument and human bodies is overcome; and the heart rate measuring method based on the image capture has a bright application prospect, for an example, heart rates can be measured directly, conveniently and quickly by utilizing mobile camera and the like.

Description

technical field The invention relates to a method for measuring heart rate. Background technique Heart Rate: A term used to describe the cardiac cycle, which refers to the number of times the heart beats per minute. There are significant individual differences in the heart rate of normal adults at rest, with an average of about 75 beats / min (between 60-100 beats / min). Heart rate can vary with age, gender, and other physiological conditions. The heart rate of newborns is very fast, reaching more than 130 beats / min. For the same person, the heart rate slows down when resting or sleeping, and the heart rate increases when exercising or emotionally excited. Under the influence of certain drugs or neurohumoral factors, the heart rate will be accelerated or decelerated. If the heart rate exceeds 100 beats per minute in adults or 105 beats per minute in infants, it is called tachycardia. An adult heart rate of less than 60 beats per minute is called bradycardia. Both tachycard...

AI Technical Summary

Problems solved by technology

The present invention aims to solve the problems of inconvenient measurement caused by the existing contact measurement method using electrocardiogram, and the low measurement accuracy of the indirect measurement method using sensors, thereby providing a heart rate measurement method based on image capture