MIT camera records subtle changes in motion, color

This is an interesting story (via BoingBoing) of a new video technique from MIT that records very fast, subtle changes in motion or color from frame to frame, allowing you to see someone’s pulse or see the flush of blood to the face with every heartbeat. Since we humans use very subtle changes in as markers of someone else’s emotional state, technology like this could give people an even more effective window into someone else’s state of mind. Or it could do the same for computers analyzing video of thousands of people in a crowd.