关键词：手势识别；三维成像仪；手势接口；测距仪
摘 要：Optical 3D imagers for gesture recognition, such as Microsoft Kinect, su er from large size and high power consumption. Their performance depends on ambient illu- mination and they generally cannot operate in sunlight. These factors have prevented widespread adoption of gesture interfaces in energy- and volume-limited environments such as tablets and smartphones. Gesture recognition using sound is an attractive candidate to overcome these difficulties because of the potential for chip-scale solution size, low power consumption, and ambient light insensitivity.