JPR_V1_N2_RP2 M.S. Kalyana Sundaram K. Gokulakrishnan Journal on Pattern Recognition 2350-112X 1 2 24 29 Hypertension, Cardiovascular Diseases, Clinical Diagnosis, AVR, Classifier, Gold Standard AVR Value In clinical diagnosis, the retinal images perform a very important role. Especially, Arteriolar to Venular Ratio (AVR) value is more necessary for the early detection of cardio vascular diseases like hypertension, coronary disease and few retinopathy Diseases. For the diagnosis of these diseases, the AVR must be calculated very accurately and it requires the correct method of vessel identification and also an accurate diameter measurement. In this paper, 'Graph Tracer Algorithm' is implemented for identifying the retinal blood vessel very precisely. The Naive Bayes classifier is used classifying these identified vessels into artery and vein. Finally, the AVR is calculated for these true vessels and the values are compared with the Gold standard AVR values. June - August 2014 Copyright © 2014 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=2925