Intelligent driver assistance systems have become important in the automotive industry. One key element of such systems is a smart user interface that tracks and recognizes drivers' hand gestures. %Various computer vision systems using optical and depth sensors have been introduced for sensing (tracking/recognition) dynamic gestures. Hand gesture sensing using traditional computer vision techniques is challenging because of wide variations in lighting conditions, e.g., inside a car. A short-range radar device %located in a driver's seat can provide additional information, including the location and instantaneous radial velocity of moving objects.
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