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Neurologists and engineers have developed a new camera system for surgeons, which looks where the eyes look. This innovative device uses voluntary and reflexive eye movements, which are registered in 3-D by video-oculography and then computed online, as signals to drive the camera servo motors in three planes: yaw, pitch, and roll (fig 1). Its primary objective is to allow a freely mobile user to aim the optical axis of a head mounted camera system at the target(s) at which he/she is voluntarily looking in the visual field, while the ocular reflexes stabilise any image shaking by naturally counter rolling the “gaze in space” of the camera during head and visual scene movements and during locomotion. The biological system of the human ocular motor control incorporates these functions, but so far, no camera system has combined free user mobility with image stabilisation and unrestricted exploration of the visual surround.
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