Eye movement analysis system using fundus images

Abstract

This paper describes a precise eye movement analysis system that incorporates an infra-red television (fundus) camera and utilizes image processing techniques. Using this method, we can measure vertical and horizontal eye position and target position as a function of time. This system uses a two level hierarchical searching method to detect the papilla quickly. The first level gives a rough estimate of papillary position by detecting the papillary area with a mask operation (differential-like operation). The second level detects papillary position precisely by a correlation method. Finally, the paper describes experimental results of measuring eye movement in horizontal and vertical directions.