[FEAT] Algorithm to take daily rate via video camera

[tesla809]

⚠️ IMPORTANT: Please fill out this template to give us as much information as possible to consider/implement the feature.

Prerequisites

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  • Reviewed the contributing guidelines and support files
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  • Searched for relevant instructions on our Discord server
  • Searched the issues of the repository you are working in to make sure one was not already filed

Summary

Based off user interview with DocMusher on what is needed for usable and valuable MVP in the field for a doctor. See: ROADMAP-TO-MVP.md

Heart rate (via Pulse) is a KEY indicator that in @DocMusher's experience can help assess issues with COVID-19. The reason is that the heart needs to work harder to pump and keep circulation up based on the reduce amount of fluids. Will follow up with DocMusher on a clearer description of this.

A heart monitor is not necessary. This can be achieved with a smartphone camera.

Task for feature algorithm:

1. Create an algorithm to take a daily heart rate (Pulse). This can be adjusted to more than once a day.

2. Make the code modular, not tightly coupled to CoronaTracker. This will require a separate repo for this code.

3. Import it as a library or package.

Decide on the language to be used. Will it run on the client's browser? (use JS). If its a microservice (use something else). It would be nice if it can run in the browser to reduce server costs (and we can import as an yarn package), if the performance isn't too negatively affected.

Work with @akilhylton (discord: @akil Hylton#7927,), @ngiangre (discord:@nickg) and the analytics team on this.

See this paper:
See: Improved Algorithm for Heart Rate Measurement Using Mobile Phone Camera by Denis Laure and Ilya Paramonov from P. G. Demidov Yaroslavl State University Yaroslavl, Russia
Feel free to tap into more research

Motivation

**Why are we doing this? **
Pulse (bpm) is a KEY indicator that DocMusher specified was necessary to know as a doctor. The trend over time will provide valuable insights.

**What use cases does it support? **
Delivering useful product as MVP for the field

What is the expected outcome?
We will have a separate module that can detect a person's pulse

Possible Alternatives

This is the lowest cost method to gain pulse at scale. Speaking with DocMusher, its effective enough for him to consider useful.

Additional Context

See algorithm in: Improved Algorithm for Heart Rate Measurement Using Mobile Phone Camera by Denis Laure and Ilya Paramonov from P. G. Demidov Yaroslavl State University Yaroslavl, Russia

[k105la]