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Blood vessel tracking in retinal images

This paper investigates the image processing techniques to identify blood vessels in the retinal images. Each identified vessel is stored and labelled with a number which also indicating whether the vessel originates from the optic disc or it is a branch of a vessel which originates from the optic disc. Non-linear fitting technique is used to process each point on blood vessels locally. The algorithm described in this paper is intended to process a large amount of retinal images preserved by th Canterbury District Health Board.