Ms. Claudia Kondermann Profile

Claudia Kondermann

at Ruprecht-Karls-Univ Heidelberg

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Proceedings Article | 2 March 2007 Paper

Blood vessel classification into arteries and veins in retinal images

Claudia Kondermann, Daniel Kondermann, Michelle Yan

Proceedings Volume 6512, 651247 (2007) https://doi.org/10.1117/12.708469

KEYWORDS: Arteries, Veins, Image classification, Image segmentation, Neural networks, Principal component analysis, Optical discs, Feature extraction, Blood vessels, Blood pressure

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The prevalence of diabetes is expected to increase dramatically in coming years; already today it accounts for a major proportion of the health care budget in many countries. Diabetic Retinopathy (DR), a micro vascular complication very often seen in diabetes patients, is the most common cause of visual loss in working age population of developed countries today. Since the possibility of slowing or even stopping the progress of this disease depends on the early detection of DR, an automatic analysis of fundus images would be of great help to the ophthalmologist due to the small size of the symptoms and the large number of patients. An important symptom for DR are abnormally wide veins leading to an unusually low ratio of the average diameter of arteries to veins (AVR). There are also other diseases like high blood pressure or diseases of the pancreas with one symptom being an abnormal AVR value. To determine it, a classification of vessels as arteries or veins is indispensable. As to our knowledge despite the importance there have only been two approaches to vessel classification yet. Therefore we propose an improved method. We compare two feature extraction methods and two classification methods based on support vector machines and neural networks. Given a hand-segmentation of vessels our approach achieves 95.32% correctly classified vessel pixels. This value decreases by 10% on average, if the result of a segmentation algorithm is used as basis for the classification.

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