Evaluation of closed eye motion monitoring by wireless communication

Abstract

In the survey, a fully automatic computerized system was proposed to monitor and track the close eyeball motion based on the designed image capture module and its peripheral circuits followed by the application of image processing method. The system is composed of three main partsimage acquisition module, wireless communication module and image processing unit on PC host. The CMOS image sensor with 120*160 pixels square resolution will write an image onto a 32K*8bits SRAM. A micro-control unit acts as an intermediate between the SRAM and the wireless transmission module which operates at 2.4GHz frequency. Due to the capacity of sampled image and protocol, the baud rate of transmission module must be higher than 800 kbps. The receiving end of the module clocks out the incoming package and sends these data to the host PC terminal by means of the RS232 channel. Finally, the developed algorithm on PC end is accomplished to judge close eyeball motion. The kernel of algorithm is based on optical flux analysis of video frames with support vector machine neural network training.