Abstract
Early detection of Non-Proliferative Diabetic Retinopathy (NDPR) is currently a highly interested research area in biomedical imaging. Ophthalmologists discover NDPR by observing the configuration of the vessel vascular network deliberately. Therefore, a computerized automatic system for the segmentation of vessel system will be an assist for ophthalmologists in order to detect an early stage of retinopathy. In this research, region based retinal vascular segmentation approach is suggested. In the steps of processing, the illumination variation of the fundus image is adjusted by using the point operators. Then, the edge features of the vessels are enhanced by applying the Gabor Filter. Finally, the region growing method with automatic seed point selection is used to extract the vessel network from the image background. The experiments of the proposed algorithm are conducted on DRIVE dataset, which is an open access dataset. Results obtain an accuracy of 94.9% over the dataset that has been used.
Highlights
The blood vessel system of the human retina is a complex network
In order to observe the initial stage of retinopathy or “NDPR”, ophthalmologists need to closely monitor the blood vessel network in the retina
The configuration of retinal blood vessels performs a responsible preface in diagnosis of diabetic retinopathy
Summary
The blood vessel system of the human retina is a complex network. The initial phase of diseases such as diabeticHow to cite this paper: Karunanayake, N. and Kodikara, N.D. (2015) An Improved Method for Automatic Retinal Blood Vessel Vascular Segmentation Using Gabor Filter. (2015) An Improved Method for Automatic Retinal Blood Vessel Vascular Segmentation Using Gabor Filter. D. Kodikara retinopathy, hypertension, arteriosclerosis, cardiovascular disease and retinopathy of prematurity (ROP), can be diagnosed by monitoring the retinal vessel structure from time to time [1]-[3]. Diabetic retinopathy is a disease that occurs due to a complication of diabetic, which usually results in severe vision loss or permanent blindness It occurs when high blood sugar levels damage the tiny blood vessels that nourish the retina. A new approach based on point operator is used to mitigate the uneven illumination in order to enhance the vessel network and to adjust it preferably providing for segmentation process.
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