# Heart rate measurement using camera ❤

**URL:** <https://onehack.st/t/heart-rate-measurement-using-camera/169722>\
**Category:** Tools & Scripts\
**Tags:** technology, ai, self-improvement\
**Created:** [January 13, 2021, 2:33pm UTC](https://onehack.st/t/heart-rate-measurement-using-camera/169722 "2021-01-13T14:33:10Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Jenna](https://onehack.st/user_avatar/onehack.st/jenna/32/166322_2.png) [@Jenna](https://onehack.st/u/Jenna)\
**Post date:** [January 13, 2021, 2:33pm UTC](https://onehack.st/t/heart-rate-measurement-using-camera/169722/1 "2021-01-13T14:33:10Z")

</div>

# Heart-rate-measurement-using-camera

[![Alt text](https://github.com/habom2310/Heart-rate-measurement-using-camera/raw/master/result.JPG)](https://youtu.be/JeQGSEXk_BQ)

# Abstract

- Heart Rate (HR) is one of the most important Physiological parameter and a vital indicator of people‘s physiological state
- A non-contact based system to measure Heart Rate: real-time application using camera
- Principal: extract heart rate information from facial skin color variation caused by blood circulation
- Application: monitoring drivers‘ physiological state

# Methods

- Detect face, align and get ROI using facial landmarks
- Apply band pass filter with fl = 0.8 Hz and fh = 3 Hz, which are 48 and 180 bpm respectively
- Average color value of ROI in each frame is calculate pushed to a data buffer which is 150 in length
- FFT the data buffer. The highest peak is Heart rate
- Amplify color to make the color variation visible

# Requirements

```auto
pip install -r requirements.txt

```

# Implementation

```auto
python GUI.py

```

- In case of plotting graphs, run “graph\_plot.py”
- For the Eulerian Video Magnification implementation, run “amplify\_color.py”

# Results

- Data from a specialized device, Compact 5 medical Econet, is used for the ground truth. In certain circumstances, the Heart rate values measured using the application and the device are the same

# Reference

- Real Time Heart Rate Monitoring From Facial RGB Color Video Using Webcam by H. Rahman, M.U. Ahmed, S. Begum, P. Funk
- Remote Monitoring of Heart Rate using Multispectral Imaging in Group 2, 18-551, Spring 2015 by Michael Kellman Carnegie (Mellon University), Sophia Zikanova (Carnegie Mellon University) and Bryan Phipps (Carnegie Mellon University)
- Non-contact, automated cardiac pulse measurements using video imaging and blind source separation by Ming-Zher Poh, Daniel J. McDuff, and Rosalind W. Picard
- Camera-based Heart Rate Monitoring by Janus Nørtoft Jensen and Morten Hannemose
- Graphs plotting is based on [https://github.com/thearn/webcam-pulse-detector](https://github.com/thearn/webcam-pulse-detector)
- [https://www.pyimagesearch.com/2017/04/03/facial-landmarks-dlib-opencv-python/](https://www.pyimagesearch.com/2017/04/03/facial-landmarks-dlib-opencv-python/)

# Note

- Application can only detect HR for 1 people at a time
- Sudden change can cause incorrect HR calculation. In the most case, HR can be correctly detected after 10 seconds being stable infront of the camera
- This github project is for study purpose only. For other purposes, please contact me at [khanhhanguyen2310@gmail.com](mailto:khanhhanguyen2310@gmail.com)

> **[GitHub - habom2310/Heart-rate-measurement-using-camera: real time application to measure heart rate](https://github.com/habom2310/Heart-rate-measurement-using-camera)**
>
> real time application to measure heart rate