Abstract
It can be considered that mouth open/close motion is very available because it is unburdened and non-contact operation can be done. In this paper, we proposed a new intuitive interface based on the mouth opening and closing motions. The user's face was observed by the USB camera, and it was taken to the computer to recognize the user's intention. Here, we utilized the area of the mouth and the aspect ratio between the height and width of the mouth. In the test trial, it was found that the mouth shape in the pronunciation of “A” and “I” could be easily recognized.
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