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Embedded heart rate measuring system based on vision and measuring method thereof

A measurement method and measurement system technology, which are applied in the measurement of pulse rate/heart rate, diagnostic record/measurement, medical science, etc. Effect

Inactive Publication Date: 2018-12-18
NANJING INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the shortcomings such as specificity and high cost in the contact measurement method in the prior art, the purpose of the invention is to design a vision-based embedded heart rate measurement system and its measurement method

Method used

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  • Embedded heart rate measuring system based on vision and measuring method thereof
  • Embedded heart rate measuring system based on vision and measuring method thereof
  • Embedded heart rate measuring system based on vision and measuring method thereof

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and examples.

[0040] A kind of vision-based embedded heart rate measuring method of the present invention comprises the following steps:

[0041] Step 1: Collect video frames, use the real-time collected face data signal as the data source, and obtain the face data in the video frame by specifying the face area in advance; set the camera collection frame rate to 10 frames per second, and judge the collected video frames . If the video frame is abnormal, the error is counted, and the video frame is re-collected immediately. When the error count reaches the specified value, it is determined that the acquisition is invalid and the camera is restarted. If it is normal, draw the video frame at the specified position on the display screen, and then judge whether the user presses start, if not, continue the above process; otherwise, enter the pre-processing of the video fram...

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Abstract

The invention discloses an embedded heart rate measuring system based on vision and a measuring method thereof. Errors caused by a face detection algorithm are reduced by fixing the acquisition area of a video frame, and eliminating dynamic capture of a face scheme. Based on the change of a face location scheme, the three components of each video frame face region R, G, B are summed instead of averaged to use as a feature of the video frame. The error of the result of obtaining the heart rate by the Fourier spectrum analysis is great. The invention provides a method for calculating the heart rate, a signal peak is processed, and then the signal peak is counted to derive the heart rate value.

Description

technical field [0001] The invention relates to the field of electronic medical equipment, in particular to a vision-based embedded heart rate measurement system and a measurement method thereof. Background technique [0002] At present, heart rate detection devices are mainly contact devices, including stethoscopes, ECG monitors and other devices. Non-contact heart rate detection devices mainly include microwave Doppler radar, laser Doppler instrument and thermal imager. The above-mentioned devices have the most accurate measurement results, but they are all expensive or not easy to carry. Devices such as heart rate bracelets and finger clip oximeters that have appeared in recent years are all based on photoplethysmography. This method must rely on a dedicated light source to achieve detection, and the action distance is very short. [0003] Photoplethysmography (Photo Plethysmo Graphy, hereinafter referred to as PPG) is a method for detecting changes in blood volume by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/024A61B5/00
CPCA61B5/0033A61B5/0059A61B5/02444A61B5/72A61B5/7203A61B5/7257
Inventor 陆林鹏王寒冰庞丽莉张雨雯
Owner NANJING INST OF TECH
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