This paper addresses the problem of detection and tracking an eye ball using image processing algorithms. After analyzing all the collected data by means of geometric, mathematic and physical procedures; the ball will be detected. The detection and tracking of ball in a video will be our objective. This characteristic has potential applications for automatic editing, broadcasting, archiving, browsing and training. The suggested algorithm is based on finding the biggest object present in each frame. The results are promising when the moving objects are few and of different sizes. In other words, when there are a number of objects of the same size, present in the video, this algorithm fails to produce accurate results .To cope with the limitations ,the video chosen has very few moving objects.

Key words: Image Processing, Eye Ball,Tracking