Proceedings of the First Joint BMES/EMBS Conference. 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and T
DOI: 10.1109/iembs.1999.804304
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Extraction of the optic disk boundary in digital fundus images

Abstract: 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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Cited by 16 publications
(13 citation statements)
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“…We also note that segmentation of the optic nerve head is relevant to other diseases of the eye (e.g. glaucoma [12] [13]), but we do not consider these further in this paper.…”
Section: A Motivationmentioning
confidence: 99%
See 1 more Smart Citation
“…We also note that segmentation of the optic nerve head is relevant to other diseases of the eye (e.g. glaucoma [12] [13]), but we do not consider these further in this paper.…”
Section: A Motivationmentioning
confidence: 99%
“…Mendels [12] used a freeform snake, initialized as a circle centered on and inside the optic nerve head. The model tended to fit a convoluted boundary, following vessel edge distractors.…”
Section: B Optic Nerve Head Contour Algorithmsmentioning
confidence: 99%
“…This segmentation process will be done with the help of snake algorithm gradient vector flow which could easily fit an edge of the OD. This kind of OD segmentation should improve the performance of optic disc segmentation [18].…”
Section: Optic Disc Localization and Segmentationmentioning
confidence: 99%
“…Mendels et al [56,58] applied morphological operations on retinal images in YIQ(Luminance In-phase Quadrature) followed by an active contour to segment the Optic Disc. In the morphological process, a Dilation operator was first applied followed by an Erosion operator in order to retain the Disc contour whilst remove the blood vessels.…”
Section: Freeform Modeling Based Approachesmentioning
confidence: 99%