«What can 3D imaging tell us about the health of the human body? Lots. The motion capture of one’s gait has the potential to serve as a digital biomarker that identifies disease progression and rehabilitation outcomes, while 3D tracking can identify problematic postures — such as spending a day hunched over a computer — that aggravate things including chronic neck pain. The ability to monitor and measure human movements can aid with detecting and managing a range of musculoskeletal disorders and much more. Great tech if you can get it, but 3D motion capture systems tend to be complicated (with multiple cameras and cables) and expensive. Until now. Researchers at Cornell University say they’ve come up with a way to capture body posture in 3D using a simple wrist band.»

«They’ve aptly named it BodyTrak, as the dime-sized wearable can track complete 3D body positions using only one miniature RGB camera worn on the wrist. To capture body silhouettes, the camera merely has to point to the wearer’s body to infer the 3D positions of 14 joints on legs, arms, the torso, and the head. In a recently published paper, Cornell researchers detail a study in which 9 participants wore BodyTrak wristbands while performing daily activities, including exercising, walking, and sitting. The results show that the cameras recorded accurate body positions with an average error of just 6.9 centimeters: less than 3 inches.»

Article written by William McCleary



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