Video-based method and system for accurately estimating human body heart rate and facial blood volume distribution
US12213767B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2022 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | May 3, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V2201/03
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided is a video-based method and system for accurately estimating heart rate and facial blood volume distribution, and the method mainly comprises the following steps: firstly, carrying out face detection of video frame containing human face, and extracting face image sequence and face key position points sequence in time dimension; secondly, compressing these sequence of face image and face key position points to obtain the facial signals in time dimension; thirdly, estimating facial blood volume distribution by facial signals mentioned in third step; finally, estimating heart rate values by using model based on deep learning technology and the spectrum analysis method respectively, then fusing the estimation results by Kalman filter to promote the accuracy of heart rate estimation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.