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Estimate of the human eye gaze direction , on the one hand, you can infer the target area or object concern , further study of human mental activity ; On the other hand , you can also take advantage of the eye movement behavior of external devices and systems control . The system is based on the design principle of infrared Television Act , to obtain hardware device consists of two parts : the OpenCV software systems and pictures . When the system is running , the infrared light source and the camera work , the software system first obtain an image of the human eye , and then carried out a series of image preprocessing steps including histogram equalization , image smoothing , binary , etc. , to achieve the desired effect of the initial image for the back prepare . Next, using the Hough transform circle detection and gray projection method for the positioning of key Pu Erqin spots and the pupil center point , and access to the center position of the two points . Finally, by comparing coordinate information and deal with these two key points in the direction of pre-established line of sight under the sentencing guidelines , to determine the direction of the line of sight of the image of the human eye , and the conclusion . The beginning of this paper, first briefly introduce the concept of behavior analysis , line - of - sight direction estimation of the significance of the study and research status , the next system of the structural properties of the human eye rotation , as well as a variety of eye-related measurement methods , and then discussed in detail in this article gaze estimation method principles of design , algorithm steps and programming , and a full description and image processing knowledge , made ??a performance analysis of scientific Finally , the experimental results and the system as a whole .
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