Non-contact heart rate measurement method based on canonical correlation analysis

Abstract

A non-contact heart rate measurement method based on canonical correlation analysis comprises the following steps: (1) collecting a face video, and extracting a ROI region from each frame; (2) separating the three primary colors of the ROI region extracted from each frame to generate three channel (red, green and blue) images, averaging all the pixel values of the channel images of each frame of image, and taking the average as the signal value of the frame of image in the channel to generate original signal sequences of the three channels of a measurement region image; (3) delinearizing and standardizing the original signal sequences of the three channels; (4) seeking vectors Wx and Wy according to the standardized signal sequences and a template Y to maximize the correlation value rho between the projection X=x<T>Wx of x on the vector Wx and the projection Y=y<T>Wy of y on the vector Wy; and (5) taking the standardized signals of the channel with the maximum correlation coefficient rho as heart rate signals. The complex process of independent principal components analysis and signal processing is avoided, the measurement process is simplified, and the measurement time is shortened.

Description

technical field [0001] The invention relates to the field of heart rate measurement, in particular to a non-contact heart rate measurement method based on canonical correlation analysis. Background technique [0002] Heart rate can be obtained from ECG signal and pulse. The collection of ECG signals needs to be obtained by special instruments for measuring ECG; the pulse rate and heart rate are consistent under normal human conditions, and the pulse rate can be used to estimate the heart rate, such as traditional Chinese medicine pulse, sphygmomanometer, fingertip pulse Sensors and some photoelectric intelligent pulse measuring instruments. However, the common point of these methods is that the measured person is required to have a certain degree of physical contact with the instrument or the doctor. These contacts bring a certain degree of inconvenience to the measurement and easily cause discomfort to the measured person. Contents of the invention [0003] The main pur...

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Problems solved by technology

However, the common point of these methods is that the measured person is required to have a certain degree of physical contact with the instrument or the doctor. These contacts bring a certain degree of inconvenience to the measurement and are likely to cause discomfort to the measured person.

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