Research on the embedded system of facial expression recognition based on HMM

With the rapid development of artificial intelligence, how to make robots have feelings has become a research highlight today. A portable device for facial expression recognition has been designed, based on the hardware platform of Intel embedded processor PXA270, and the software platform of embedded operation system Linux. The functions of video capture, image processing and face tracking have been achieved, through the application of the USB, Video4Linux programming technology, image processing technology, and artificial psychology theory. At the same time, an emotion model more consistent with the characteristics of human emotions is proposed under the theoretical framework of HMM according to the characteristics of human emotions. A new real-time facial expression recognition method is proposed based on the face detection and facial feature detection technology. Experimental results show that, the effect of face recognition is satisfactory, and the method is effective.