Heart rate detection method, system and equipment based on PPG and storage medium

Abstract

The invention discloses a heart rate detection method, system and equipment based on PPG and a storage medium. The method comprises the steps that skin coarse detection is conducted on an input facialimage to obtain an interested skin area image; spatial pixel averaging is conducted on the green channel of the skin area image, and interpolation calculation is conducted on the facial image with apreset frame number to obtain a time sequence signal containing cardiac impulse information; filtering treatment is conducted on the time sequence signal using continuous wavelet transform to obtain impulse waves; a heart rate value is obtained by using Fourier transform to achieve the non-contacting type body heart rate measurement, the accuracy of the measuring result is high, and the method canbe applied to the fields of medicine, polygraph test and the like.

Description

technical field [0001] The invention relates to heart rate measurement technology, in particular to a PPG-based heart rate detection method, system, device and storage medium. Background technique [0002] At present, the cardiac pulse measurement technology based on the electrocardiogram (ECG) needs to be attached to the human body with a gel adhesive patch or a chest strap. On the one hand, these contacts may cause skin allergies or discomfort, and on the other hand, the use process is inconvenient. Remote measurements can provide a more comfortable electrode-free physiological assessment. However, until now, most of the remote measurement systems are almost non-automated in design, and are easily affected by movement during use, resulting in low measurement accuracy. [0003] In addition, when performing a polygraph test, it is necessary to perform the test according to the polygraph tester's facial expression, heart rate and other instructions, and it is best to test wi...

AI Technical Summary

Problems solved by technology

However, so far, the design of most remote measurement systems is almost non-automated, and it is easily affected by movement during use, resulting in low measurement accuracy

[0003] In addition, when performing a polygraph test, it is necessary to perform the test according to the polygraph tester's facial expression, heart rate and other instructions, and it is best to test without the testee's knowledge in order to obtain more accurate test results. Contact heart rate measurement is not suitable for polygraph tests

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