Setting Interop Code? For Facial Motion Capture

Hello!

This is my first time posting and I'm not sure where I should be asking this or if I'm allowed to ask what I'm about to ask, so please forgive me if it's something that I shouldn't do.

First of all, let me start by saying that I am a complete newbie to coding. I don't know what I'm doing or how any of this works. I'm also a complete beginner to Unity. I've only ever dabbled around with posing a character model. I essentially want to setup a live facial motion capture with some code/project that I was able to find online. I'll be providing a link down below to the GitHub page. This code is what I believe was used in the demonstration video below. The individual who made this video sadly cannot share the landmark tracking library, but they did mention that the only thing we needed to do is setup the correct interop code and provided this link:
http://thomasmountainborn.com/category/unity-tutorials/

Again, I'm completely new to coding and Unity so I have no idea what this means much less know how to set it up. I tried following the tutorial but all it did was confuse me. I don't understand how to get the camera window on the top left of the video to open up and start tracking, nor how to send that tracking data to a character model. If someone could point me in the right direction I would greatly appreciate it. Code along with the know how would be appreciated too. I'm sure there's a guide out there already on how to do this but I don't know what keywords to look up. Thank you!


GitHub link for code: https://github.com/genshengye/IntraFace