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Anti-motion-interference non-contact respiratory signal measuring method

A respiratory signal and motion interference technology, which is applied in the evaluation of respiratory organs, diagnostic recording/measurement, image data processing, etc., can solve the problems of poor measurement accuracy, improve measurement accuracy, remove baseline drift, and achieve simple results

Active Publication Date: 2020-07-10
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

[0003] The present invention proposes a non-contact respiratory signal measurement method that is resistant to motion interference, which is used for non-contact measurement of respiratory signals, and overcomes the problem of poor measurement accuracy when measuring respiratory signals in sports scenes in the prior art

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  • Anti-motion-interference non-contact respiratory signal measuring method
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  • Anti-motion-interference non-contact respiratory signal measuring method

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Embodiment Construction

[0036] The present invention will be further described in detail according to the embodiments and accompanying drawings.

[0037] The non-contact respiration signal measurement method for anti-motion interference includes the following implementation steps:

[0038] Step 1: Take N frames of thoracic position images;

[0039] Step 2: Processing of the chest position image of the first frame;

[0040] Step 2.1: Select at least three designated points in the center of the chest position image of the first frame; the at least three designated points must be able to form a plane; in order to ensure a reasonable amount of calculation and detection accuracy, four designated points are selected in this embodiment It should be noted that the four designated points here are equivalent to the operator selecting points on the image with the mouse, which are artificially designated points.

[0041] Step 2.2: Take each specified point as the center and divide a feature point detection are...

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Abstract

The invention discloses an anti-motion-interference non-contact respiratory signal measurement method, which does not need to be in contact with a human body for measurement, is simple to implement and is not interfered by detection equipment, and the measurement precision is greatly improved. The method mainly comprises the following steps: 1, shooting N frames of thoracic cavity position images;2, processing a first frame of thoracic cavity position image; 3, processing the second to Nth frames of thoracic cavity position images; 4, obtaining a curve of each side length and each diagonal length changing with time through the obtained side lengths and diagonal lengths of the N polygons on the N frames of thoracic cavity position images; and 5, carrying out filtering processing on the curve of each side length and each diagonal length changing with time so as to obtain a respiration signal and a respiration rate.

Description

technical field [0001] The invention relates to a non-contact respiratory signal measurement method, in particular to a non-contact respiratory signal measurement method resistant to motion interference. Background technique [0002] As an important physiological parameter, respiratory signal has great value in clinical and daily monitoring. In order to overcome the disadvantages of traditional respiration measurement methods, radio frequency, imaging and other methods are currently used to achieve non-contact measurement of respiration signals. However, in actual respiration measurement scenarios, human body motion is inevitable, which leads to the inapplicability of radio frequency methods and the decrease of measurement accuracy of imaging methods based on color changes. Therefore, there is a need for an effective method for non-contact measurement of respiratory signals in sports scenes. Contents of the invention [0003] The present invention proposes a non-contact ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/246G06T7/13A61B5/08
CPCG06T7/0012G06T7/248G06T7/13A61B5/08A61B5/0816G06T2207/20164G06T2207/10016
Inventor 周亮刘朝晖刘凯姜凯段晶单秋莎李治国余江军
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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