An application of detection function for the eye blinking detection

Abstract

The electrooculogram represents the electrical activity of muscles that control movements of eyes. The eye blinking is a natural protection system which defends the eye from environmental exposure. The spontaneous eye blink is considered to be a suitable indicator for fatigue diagnostics during many, different tasks of human being activity. The action of eye blinks covers a specific range of frequency and for that reason it is possible to construct a function which processes the signal and generates an artificial peak when blink occurs. This function is called the detection function. This function is used to detect the spontaneous eye blink action. Nonlinear and linear signal processing methods are applied to obtain the detection function waveform. On this base the position of an eye blink is estimated. The results demonstrate that the measurement of an eye blink parameter provides reliable information for eye-controlled systems from human-machine interface.