Method of Eye Location Based on Gray Projection Function

This paper presents the algorithm of locating eyes automatically. By utilizing the gray projection curve of the facial image, this paper focuses on the area of the eyes in the image, and decides the position of the eyes. The gray-level histogram estimates the value of the initial threshold and segment the two-leveled area of the eyes. This paper uses the 2-D correlation coefficients to judge the appearance of the black block in two eyes. This paper further locates the position of two eyes, according to the similarity of symmetry.