The video "motion microscope" makes invisible changes visible in people and objects
Dec 16, 2014 | |
By amplifying color changes in videos, pixel by pixel, researchers have been able to make the imperceptible movements behind such changes obvious to the naked eye.
1. While the lefthand video shows an immobile face, the righthand video shows periodic red flushes, driven by a pulse.
2. Amplified still further, such color changes can highlight a baby's stomach moving as it breathes, a motion that is normally impossible to see.
3. The technique can also show that a construction crane, seemingly still, is actually shaking in the wind.
4. The motion microscope also shows how a pipe vibrates into different shapes when struck by a hammer, a technique that could help engineers detect structural defects.
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