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In this study, we present a wireless (non-contact) gesture recognition methodusing only incoherent light wave signals reflected from a human subject. Incomparison to existing radar, light shadow, sound and camera-based sensingsystems, this technology uses a low-cost ubiquitous light source (e.g.,infrared LED) to send light towards the subject's hand performing gestures andthe reflected light is collected by a light sensor (e.g., photodetector). Thislight wave sensing system recognizes different gestures from the variations ofthe received light intensity within a 20-35cm range. The hand gesturerecognition results demonstrate up to 96% accuracy on average. The developedsystem can be utilized in numerous Human-computer Interaction (HCI)applications as a low-cost and non-contact gesture recognition technology.

Hand Gesture Recognition through Reflected Infrared Light Wave Signals