Non-contact respiration detection method and device

A non-contact, breathing detection technology, applied in image data processing, instruments, calculations, etc., to achieve the effect of simple method and extensive data sources

Pending Publication Date: 2022-03-04
国家海洋局南海调查技术中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that both contact and non-contact breathing detection methods use some special equipment and still have certain limitations.

Method used

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  • Non-contact respiration detection method and device
  • Non-contact respiration detection method and device
  • Non-contact respiration detection method and device

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Embodiment 1

[0042] Refer to attached figure 1 or attached figure 2 , the invention discloses a non-contact respiration detection method for obtaining respiration waveforms according to respiration images of the chest and abdomen regions of a human body, which mainly includes the following steps:

[0043] Step S1, acquiring a breathing image of the chest and abdomen area of ​​the human body.

[0044] Step S2, converting the breathing image into a grayscale image, and extracting the moving speed of each pixel in each frame of the grayscale image in the X-axis direction and the moving speed in the Y-axis direction by using the optical flow method.

[0045] Step S3, obtaining the sum of the moving speeds of all pixels in each frame of the grayscale image in the X-axis direction and the sum of the moving speeds in the Y-axis direction to obtain a respiratory waveform diagram.

[0046] In step S1, an acquisition method for acquiring images of the chest and abdomen regions of the human body i...

Embodiment 2

[0096] Refer to attached image 3 , the present invention also discloses a non-contact breathing detection device, which is used in the same application scenario as that of Embodiment 1, including: an image acquisition module 101 , an image processing module 102 and a data processing module 103 .

[0097] The image acquisition module 101 is configured to acquire breathing images of the chest and abdomen regions of the human body.

[0098] The image processing module 102 is configured to convert the breathing image into a grayscale image, and use the optical flow method to extract the movement speed and the Y-axis direction of each pixel in each frame of the grayscale image in the X-axis direction speed of movement.

[0099] The data processing module 103 is configured to acquire the sum of the moving speeds of all pixels in each frame of the grayscale image in the X-axis direction and the sum of the moving speeds in the Y-axis direction to obtain a respiratory waveform diagra...

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Abstract

The invention belongs to the technical field of machine vision, and discloses a non-contact respiration detection method and device. The detection method comprises the following steps: acquiring a breathing image of a chest and abdomen area of a human body; the breathing image is converted into a gray level image, and the movement speed of each pixel point in each frame of gray level image in the X-axis direction and the movement speed of each pixel point in the Y-axis direction are obtained through an optical flow method; and obtaining the sum of the movement speeds of all the pixel points in the X-axis direction and the sum of the movement speeds in the Y-axis direction of each frame of gray level image to obtain a breathing oscillogram. The method has the advantages that the breathing oscillogram is obtained through the breathing image of the chest and abdomen area of the human body, the breathing image can be collected through the camera, and therefore data sources are wide, and the method can adapt to breathing detection in more application scenes.

Description

technical field [0001] The invention relates to the technical field of machine vision, in particular to a non-contact breathing detection method and device. Background technique [0002] Human respiration, as an indicator of human health detection, can reflect various states of the human body. Generally speaking, breathing tests need to go to the hospital and use professional medical equipment for testing. However, the use of medical devices to detect breathing limits the use of detection scenarios, and the high cost of using medical devices for detection is not conducive to widespread application. [0003] In order to make breath detection more convenient and expand application scenarios of breath detection, a contact breath detection method and a non-contact breath detection method have been developed in the prior art. Contact breath detection methods generally require the use of wearable electronic devices for detection, while non-contact breath detection methods genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/246
CPCG06T7/246G06T2207/10016
Inventor 黄志成董超郑兵
Owner 国家海洋局南海调查技术中心
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