The MIT folks have developed a process called Eulerian Video Magnification and it almost seems like as if it was pulled out of a science fiction movie. It can reveal the "subtle changes in the world" that are otherwise imperceptible to the human eye. Before you watch the video, do note, that it's kind of gross!
The tech picks up on the very slight nuances in a video that you can't detect with your eye. For example, the way a face reddens as blood is pumped through the body. Their system grabs these visualizations from a video sequence and applies spatial decomposition then temporal filtering to the frames and amplifies the color so that these nuances become amazingly dynamic and easy to see.
Think of it as an X-ray vision technique. And it's got a lot of possible medical applications too from being able to pick up vital signs from standard videos, to tracking a way a baby is breathing to analyzing the way an artery is pulsing. Not bad at all. Check out the video below:[MIT via BuzzFeed]