Zdravniški Vestnik (Oct 2005)
The automatic measurement of papilla excavation in fundus images
Abstract
Background: Fundus images contain visual information that can help an ophthalmologist diagnose several diseases, including glaucoma. The latter can be easily detected by measuring the optic disc cup in fundus images. The optic disc cup is defined as a C/D ratio, a ratio between the cup diameter and the optic disc diameter.Methods: In this paper we present a system for an automatic optic disc detection and an automatic C/D measurement which facilitates glaucoma diagnosis made by the ophthalmologist. We have used standard computer vision methods and modified some of them to obtain better results.Results and conclusions: Described methods were tested on a set of 39 fundus images. Optic disc area was successfully detected in 33 cases. Detection of cupping was 100% successful. The results are very promising and represent a good startingpoint for further development in computer-assisted diagnostics.
