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conference paper
Extraction of the optic disk boundary in digital fundus images
1999
Proceedings BMES/EMBS 1999
The methods of active contours (snakes) and level sets were applied to images of the retina in order to locate the outer boundary of the optic disk. A gradient-vector-flow based active contour was used as it performed well over a large range of initial conditions. Images were pre-processed to lessen the influence of blood vessels on boundary detection. Both active contours and level set methods accurately located the correct boundary; level set methods were computationally more intensive.
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Mendels1999_270.pdf
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openaccess
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