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A video heart rate detection method that removes the interference of ambient light changes

A detection method and ambient light technology, applied in the field of biological image information, to achieve the effect of ensuring accuracy

Active Publication Date: 2018-02-27
深圳慧智星晨科技有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, many researchers have improved the accuracy of heart rate measurement by eliminating the influence of motion artifacts, but there are few reports on ambient light changes

Method used

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  • A video heart rate detection method that removes the interference of ambient light changes
  • A video heart rate detection method that removes the interference of ambient light changes
  • A video heart rate detection method that removes the interference of ambient light changes

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Embodiment Construction

[0048] In this embodiment, a video heart rate detection method that removes the interference of ambient light changes, such as figure 1 shown. Firstly, the facial region of interest data set and the background area data set are obtained, and the two data sets are processed by joint blind source separation technology, and the signal source of the common ambient light change is extracted and zeroed, and the signal source without the interference of ambient light change is obtained. Facial region of interest data set; secondly, select the facial region of interest data of the best color channel, and use the overall average empirical mode decomposition method to obtain the eigenmode component; then put all the frequencies corresponding to the maximum amplitude within the set heart rate range The eigenmode component of is determined as the candidate eigenmode component set, and the eigenmode component corresponding to the largest maximum amplitude is determined as the best eigenmod...

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Abstract

The invention discloses a video heart rate detection method that removes the interference of ambient light changes. Firstly, a facial area of ​​interest data set and a background area data set are obtained, and the joint blind source separation technology is used to process the two data sets, and the jointly owned environment The signal source of the light change is extracted and zeroed to obtain the facial region of interest data set without the interference of ambient light change; secondly, the facial region of interest data of the best color channel is selected, and the eigenmode component is obtained by using the overall average empirical mode decomposition method ; Then determine all the eigenmode components whose frequency corresponding to the maximum amplitude is within the set heart rate range as the candidate eigenmode component set, and determine the eigenmode component corresponding to the maximum amplitude as the best eigenmode component Mode component, the video heart rate is obtained through the peak detection algorithm. The invention provides a more accurate algorithm for non-contact heart rate detection, and has important application prospects in clinical disease diagnosis and daily medical care.

Description

technical field [0001] The invention belongs to the technical field of biological image information, and in particular relates to a non-contact video heart rate detection method that removes the interference of ambient light changes. Background technique [0002] Heart rate is one of the important physiological parameters of human life activities. It refers to the number of heart beats per unit time, usually the number of heart beats per minute (beat per minute, bpm), which is a physiological indicator for routine clinical diagnosis. diagnosis is of great importance. [0003] Conventional clinical heart rate detection instruments generally need to be in direct contact with the human body. The contact type mainly includes conventional measurement methods such as electrocardiogram, chest belt, and pulse oximeter. Due to its high accuracy, it is widely used in medical clinics, first aid, and community medical care. However, some measurements require the use of conductive gel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/90G06K9/00
CPCG06T7/0012G06T2207/10016G06T2207/20104G06T2207/20116G06T2207/30048G06V40/162
Inventor 陈勋徐灵曦成娟
Owner 深圳慧智星晨科技有限公司
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