The comparison of GVF Snake Active Contour method and Ellipse Fit in optic disc detection for glaucoma diagnosis

The paper proposes a method for automatic analysis of the shape and size of the optic disc and optic cup based on the optic disc and optic cup edge detection, performed by GVF Snake Active Contour, comparing the performance with the Ellipse Fit method. The result shows that the GVF Snake Active Contour system gives better result compared with the Ellipse Fit system, the methods with highest accuracy of performance attained for C/D ratio of area, concretely 84,38% for GVF Snake Active Contour method and 81,25% for Ellipse Fit method.