Method and device for non-contact pulse real-time estimation based on video
A non-contact, pulse technology, applied in the field of biometrics, can solve the problems of weak robustness of motion noise, limited effective application, poor robustness, etc., to achieve pulse signal estimation and instantaneous heart rate calculation, good real-time, large The effect of applying space
Active Publication Date: 2020-12-15
INST OF AUTOMATION CHINESE ACAD OF SCI
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Problems solved by technology
The published video pulse signal estimation methods generally calculate the average heart rate in a video offline, and the method is less robust to head movement, facial non-rigid body activities, illumination changes, etc.
The offline calculation of the average heart rate is not suitable for making quick judgments on the subject's current instantaneous psychological and physiological conditions, and the weak robustness to motion noise limits the effective application of existing methods
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[0044] The technical problems solved by the embodiments of the present invention, the technical solutions adopted and the technical effects achieved are clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other equivalent or obviously modified embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the invention can be embodied in many different ways as defined and covered by the claims.
[0045] It should be noted that, in the following description, many specific details are given for the convenience of understanding. It may be evident, however, that the present invention may be practiced without these specific details.
[0046] It should be noted that, in...
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The invention belongs to the technical field of biometric identification, particularly relates to a non-contact pulse real-time estimation method based on a video and a device, and aims to enhance thereal-time experience and the motion robustness. The non-contact pulse real-time estimation method includes the steps that interested skin areas are acquired from video streams; original RGB signals of all pixels in the interested areas in frames of the video streams are calculated; the original RGB signals are preprocessed; the preprocessed signals are filtered by using a trained deep neural network filter to obtain a pulse estimation signal; the pulse estimation signal is subjected to heartbeat peak detection; and according to the heartbeat peak, the current instantaneous heart rate is calculated by a preset method. According to the non-contact pulse real-time estimation method based on the video, pulse signal estimation and instantaneous heart rate calculation can be effectively realized, good real-time performance, accuracy and robustness are achieved, and the non-contact pulse real-time estimation method based on the video and the device are suitable for fields such as forensic lie detection, health monitoring, vivo detection in biological recognition.
Description
technical field [0001] The invention belongs to the technical field of biometrics, and in particular relates to a video-based non-contact pulse real-time estimation method and equipment. Background technique [0002] Pulse signal is a physiological signal with important reference value, which can reflect people's health status and psychological state. Therefore, the effective collection of pulse signals is of great value in the fields of medical monitoring, criminal detection and lie detection. Traditional pulse signal acquisition devices are all contact instruments, such as electrocardiometers, finger-clip pulse oximeters, and the like. The contact collection method restricts the free activities of the patients under surveillance, and also increases the psychological defense of the subjects for the scene of criminal investigation and polygraph detection. Therefore, this collection method has disadvantages such as poor convenience, weak concealment, and high cost. In order...
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IPC IPC(8): A61B5/02A61B5/024
CPCA61B5/0059A61B5/02A61B5/02444A61B5/72
Inventor 谭铁牛董晶王伟彭勃
Owner INST OF AUTOMATION CHINESE ACAD OF SCI