https://github.com/zalo/lifelens

A Webcam-based Heartrate Monitoring Demo
https://github.com/zalo/lifelens

face-detection heart-rate webcam

Last synced: 14 days ago
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A Webcam-based Heartrate Monitoring Demo

• Host: GitHub
• URL: https://github.com/zalo/lifelens
• Owner: zalo
• License: mit
• Created: 2021-05-29T04:14:03.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2021-07-09T19:19:01.000Z (almost 4 years ago)
• Last Synced: 2025-03-25T21:11:13.607Z (about 1 month ago)
• Topics: face-detection, heart-rate, webcam
• Language: JavaScript
• Homepage: https://zalo.github.io/LifeLens/
• Size: 2.65 MB
• Stars: 7
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# [LifeLens](https://zalo.github.io/LifeLens/)



  

      

  

      

  

      



 A quick and _extremely_ dirty test for reading facial bloodflow via webcam (eventually for detecting heartrate).

[![Lifelens Demo](LifeLens.gif)](https://zalo.github.io/LifeLens/)

## Basic Algorithm

 - Get a Bounding Box of the Face

 - Average up the R and G components of all the pixels in the box

 - Divide the Red Channel by the Green Channel

 - Crop to a fixed range and add filtering

 ## Limitations

 - Needs strong ambient illumination

 - Results may be skin color dependent

 ## Credits

 - [three.js](https://github.com/mrdoob/three.js/) (3D Rendering Engine)

 - [Mediapipe Facemesh](https://github.com/tensorflow/tfjs-models/tree/master/face-landmarks-detection) (Face Tracking)