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Feature wave extraction method, device and equipment and storage medium

An extraction method and feature wave technology, applied in the field of feature wave extraction methods, devices, equipment and storage media, can solve the problems of time-varying signal loss, large fluctuation signal error, heart rate and breathing frequency and true value deviation and other problems

Pending Publication Date: 2020-10-20
ONE CONNECT SMART TECH CO LTD SHENZHEN
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing detection process, due to the interference of various noises such as ambient light and skin shadows, the error of the fluctuation signal corresponding to the vital signs extracted from the skin color change signal is relatively large
[0003] In order to remove the influence of the above interference, most of the existing technologies reduce the interference by filtering, but the use of filtering will lead to the loss of time-varying signals, resulting in a deviation between the extracted heart rate and respiratory frequency and the real value

Method used

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  • Feature wave extraction method, device and equipment and storage medium
  • Feature wave extraction method, device and equipment and storage medium
  • Feature wave extraction method, device and equipment and storage medium

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0029] The flow charts shown in the drawings are just illustrations, and do not necessarily include all contents and operations / steps, nor must they be performed in the order described. For example, some operations / steps can be decomposed, combined or partly combined, so the actual order of execution may be changed according to the actual situation.

[0030] It should be understood that the terms used in the specification of this application are for the purpose of ...

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Abstract

The invention relates to the field of biological recognition and blockchain, and particularly discloses a feature wave extraction method, device and equipment and a storage medium, and the method comprises the steps: obtaining multiple frames of skin images of a preset region, and extracting a skin color change signal from the multiple frames of skin images; performing interference removal on theskin color change signal to obtain a processed skin color change signal; carrying out signal decomposition on the processed skin color change signal to obtain a plurality of intrinsic mode functions;performing Fourier transform on each intrinsic mode function to obtain frequency information corresponding to each intrinsic mode function; and determining a target feature wave according to the frequency information corresponding to each intrinsic mode function. In addition, the invention also relates to a blockchain technology, and the skin image, the skin color change signal and the target feature wave can be stored in the blockchain node. The integrity and the accuracy of the obtained target feature wave are improved.

Description

technical field [0001] The present application relates to the field of feature extraction, and in particular to a feature wave extraction method, device, equipment and storage medium. Background technique [0002] At present, the light volume description method can be used to inversely deduce the vital signs related to the breathing and heartbeat cycle according to the subtle changes in the skin color of the breathing and heartbeat cycle changes. However, in the existing detection process, due to the interference of various noises such as ambient light and skin shadows, the error of the fluctuation signal corresponding to the vital signs extracted from the skin color change signal is relatively large. [0003] In order to remove the influence of the above-mentioned interference, most of the existing technologies reduce the interference by filtering, but the use of filtering will cause the loss of time-varying signals, resulting in a deviation between the extracted heart rate...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/46
CPCG06V40/10G06V10/56G06F2218/00G06F2218/04G06F2218/08
Inventor 屠宁邓强王家桢赵之砚施奕明
Owner ONE CONNECT SMART TECH CO LTD SHENZHEN
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