When the visitors put their chin on the chin rest (light sensor), the light sensor will detect less light and send a signal "covered" to the processing programme. Once the processing received the "cover" signal, it will start running the face detection and face recognition. But as soon as the visitor leaves, the light sensor will detect more light and send the signal "not covered" to the processing programme to stop face detection and face recognition. With the help of light sensor, I can solve the problem of the inaccurate of OpenCV, because the OpenCV will start only when people put their face in front of the camera. So it can decrease the possibilities of capture objects similar to a human face. |
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