Title:
VIDEO-BASED HUMAN HEART RATE AND FACIAL BLOOD VOLUME ACCURATE DETECTION METHOD AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/238344
Kind Code:
A1
Abstract:
A video-based heart rate and facial blood volume accurate detection method and system. the method comprises: first carrying out face detection on a video frame image comprising a human face, extracting a face image sequence and face critical position points in a time dimension, and obtaining a face overall signal and a face roi signal set in the time dimension; secondly, constructing and training a heart rate prediction model, positioning and extracting forehead and cheek position data according to the extracted face critical position points, obtaining a face critical position image sequence in the time dimension, compressing the sequence to obtain a face signal in the time dimension, and taking the signal as an input sample of the heart rate prediction model; thirdly, detecting facial blood volume distribution on the basis of the face overall signal and the face roi signal set; and finally, respectively adopting the heart rate prediction model and the spectral analysis method to detect the heart rate value, and fusing the detection result. The detection method has high robustness and is suitable for complex application scenes.
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Inventors:
BAO HUJUN (CN)
XU XIAOGANG (CN)
WANG XIAOLONG (CN)
XU XIAOGANG (CN)
WANG XIAOLONG (CN)
Application Number:
PCT/CN2021/080905
Publication Date:
December 02, 2021
Filing Date:
March 16, 2021
Export Citation:
Assignee:
UNIV ZHEJIANG (CN)
International Classes:
G06K9/00; G06K9/62; G06N3/04; G06N3/08
Foreign References:
| CN111626182A | 2020-09-04 | |||
| CN109602412A | 2019-04-12 | |||
| CN110321781A | 2019-10-11 | |||
| CN107692997A | 2018-02-16 | |||
| CN109700450A | 2019-05-03 | |||
| US20170367590A1 | 2017-12-28 |
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
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