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Mathematics 2019, 7(2), 169;

Extraction of Blood Vessels in Fundus Images of Retina through Hybrid Segmentation Approach

Computer Vision & Soft Computing Laboratory, School of Computing, SASTRA Deemed University, Thanjavur 613 401, India
Health, Safety & Environment Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India
Author to whom correspondence should be addressed.
Received: 8 December 2018 / Revised: 17 January 2019 / Accepted: 7 February 2019 / Published: 13 February 2019
(This article belongs to the Special Issue Applications of Mathematics to Engineering and Information Sciences)
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A hybrid segmentation algorithm is proposed is this paper to extract the blood vessels from the fundus image of retina. Fundus camera captures the posterior surface of the eye and the captured images are used to diagnose diseases, like Diabetic Retinopathy, Retinoblastoma, Retinal haemorrhage, etc. Segmentation or extraction of blood vessels is highly required, since the analysis of vessels is crucial for diagnosis, treatment planning, and execution of clinical outcomes in the field of ophthalmology. It is derived from the literature review that no unique segmentation algorithm is suitable for images of different eye-related diseases and the degradation of the vessels differ from patient to patient. If the blood vessels are extracted from the fundus images, it will make the diagnosis process easier. Hence, this paper aims to frame a hybrid segmentation algorithm exclusively for the extraction of blood vessels from the fundus image. The proposed algorithm is hybridized with morphological operations, bottom hat transform, multi-scale vessel enhancement (MSVE) algorithm, and image fusion. After execution of the proposed segmentation algorithm, the area-based morphological operator is applied to highlight the blood vessels. To validate the proposed algorithm, the results are compared with the ground truth of the High-Resolution Fundus (HRF) images dataset. Upon comparison, it is inferred that the proposed algorithm segments the blood vessels with more accuracy than the existing algorithms. View Full-Text
Keywords: segmentation; blood vessels; morphology; bottom hat; fusion segmentation; blood vessels; morphology; bottom hat; fusion

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Sundaram, R.; KS, R.; Jayaraman, P.; B, V. Extraction of Blood Vessels in Fundus Images of Retina through Hybrid Segmentation Approach. Mathematics 2019, 7, 169.

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