Imagine if your simple photoshop skills could advance medical science. It’s possible that these people have done basically that. Using a sort of video filter, they are able to take video footage of any person and exaggerate the tiny movements they are making to give you more of an idea of how their vitals are doing.
You can detect heartbeat, blood circulation, and breathing all with just a video image. I think it compares to things you can learn studying living things in slow motion, it kind of gives you another perspective for what’s going on. I’m all for stuff like this.