Eulerian Video Magnification for Revealing Subtle Changes in the World
This is a similar idea to the temporal arterty thermometer, which uses an infrared camera: <a href="https://en.wikipedia.org/wiki/Medical_thermometer#Temporal_artery" rel="nofollow">https://en.wikipedia.org/wiki/Medical_thermometer#Temporal_a...</a><p>The mathematical model for the sensor is probably different, though.