Heart rate detection method based on depth camera and millimeter wave radar

Abstract

The invention discloses a heart rate detection method based on a depth camera and a millimeter wave radar, and relates to the technical field of heart rate detection.The heart rate detection method comprises the steps that an original depth image of a human body is obtained, segmentation processing is conducted based on the original depth image, and a thoracic cavity area of the human body is obtained; calculating an average value of pixel values in the thoracic cavity region on the original depth image to obtain a thoracic cavity region distance value; the radar determines a physiological signal distance range according to the thoracic cavity area distance value, obtains thoracic cavity vibration signals in the physiological signal distance range, separates the thoracic cavity vibration signals to obtain heart rate signals and respiration signals, obtains heartbeat frequency and respiration frequency, and respectively outputs the relationship between the heartbeat frequency and the time and the relationship between the respiratory frequency and the time. According to the arrangement, the original depth image segmentation processing and the millimeter wave radar detection technology are combined, so that the detection range of the radar is reduced, and the accuracy of radar detection and heartbeat frequency measurement is improved.

Description

technical field [0001] The present invention relates to the technical field of heart rate detection, and more specifically, to a heart rate detection method based on a depth camera and a millimeter-wave radar. Background technique [0002] With the popularization and wide application of automobiles, people pay more and more attention to the safety and intelligence of driving. At present, there are not a few safety accidents caused by driving under the driver's fatigue state, and the driver's driving state can be judged according to the change of his heart rate. Therefore, safety accidents caused by factors such as fatigue driving can be reduced by monitoring the heart rate and other characteristics of living organisms in the car; heart rate detection can also be used to determine whether the driving seat is a living body or a prosthesis, which plays an anti-counterfeiting role. [0003] In the prior art, heart rate detection is mostly based on a single method of millimeter-...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a heart rate detection method based on a depth camera and a millimeter-wave radar to solve the problem of low accuracy of the heart rate value measured by a single method of the millimeter-wave radar in the prior art

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