Eulerian Video Magnification Technology Reveals Moments That Occur in the Blink of an Eye

Eulerian Video Magnification Technology Reveals Moments That Occur in the Blink of an Eye

An example of using our Eulerian Video Magnification framework for visualizing the human pulse. (a) Four frames from the original video sequence. (b) The same four frames with the subject’s pulse signal amplified. (c) A vertical scan line from the input (top) and output (bottom) videos plotted over time shows how our method amplifies the periodic color variation. In the input sequence the signal is imperceptible, but in the magnified sequence the variation is clear.

An example of using our Eulerian Video Magnification framework for visualizing the human pulse. (a) Four frames from the original video sequence. (b) The same four frames with the subject’s pulse signal amplified. (c) A vertical scan line from the input (top) and output (bottom) videos plotted over time shows how our method amplifies the periodic color variation. In the input sequence the signal is imperceptible, but in the magnified sequence the variation is clear.

Here’s a video overview of some interesting research that’s being done in the area of video processing. By taking standard video as an input and doing some fancy technical mojo on it, researchers are able to amplify information in it to reveal things that are virtually invisible to the human eye. For example, you can detect a baby’s heartbeat by simply pointing a camera at his/her face. The method is able to visualize the pulsating flow of blood that fills the face.

MIT researchers are developing some interesting technology that could supercharge our cell phone cameras. Dubbed “Eulerian Video Magnification”, the project’s goal is to amplify “hidden” information by revealing the subtle changes in standard video too difficult for the naked eye to detect. For example, you can input a video of a person simply staring at the camera, process it with the video magnification technology, and it’ll output a video that shows the person’s face pulsating red to visualize the actual flow of blood in and out of the face. The technology is powerful enough to even detect the pulsations of the radial artery in a video of one’s wrist. It’s amazing stuff, and it brings a lot of potential for contact-free medical sensors and monitoring devices.

Take a look at the video below explaining the technology and demonstrating some examples. There’s a lot of technical jargon, so you may want to skip ahead to the 1:25 mark to see the really cool stuff.

Source : http://www.petapixel.com/2012/06/13/magnifying-the-subtle-changes-in-video-to-reveal-the-invisible/

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