The times they are a-changin’.
This post seems to be older than 10 years—a long time on the internet. It might be outdated.
Better described as “a method to amplify and visualize temporal variations in videos that are difficult to see with the naked eye.” Anything that has a rhythm to it can be enhanced. They have a particularly cool example of motion magnification in natural videos that shows how the ever-so-slight change in your arteries as blood pumps through it can be picked up.
As Kottke points out, this technology already can be seen in products such as the iPhone Cardiio App, which “uses your phone’s front camera to analyze the amount of light reflected off of your face” to determine your pulse rate.
Welcome to the future.
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