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A Novel Method For Automatic Optic Disc Elimination From Retinal Fundus Image




diabetic patients, diabetic retinopathy, diagnosis, diaretdb, optic disc elimination, red channel, yellow lesions, retinal fundus image


Diabetic retinopathy has turned out to be one of the most common causes of vision loss in diabetic patients. Hence, it becomes inevitable for diagnosing it at an early stage. Various visual features like exudates, cotton wool spots, microanuerysms and hemorrhages are responsible for detecting diabetic retinopathy from retinal fundus image. Exudates are basically bright yellow lesions. Optic disc is normal feature of any retinal fundus image which is also highly illuminated region in the fundus image. So, when exudate detection is carried out, optic disc is also detected which gives incorrect output which implies the necessity of optic disc elimination at the preliminary stage of processing. The paper proposes and investigates a novel method for optic disc elimination which involves thresholding and morphological processing on the red channel of the image. The sensitivity of the methodology is found to be 75.02% for ‘diaretdb’ database and 80.95% for images from ‘Bankers Retina Clinic & Laser Centre, Ahmedabad’.

Other Details

Paper ID: IJSRDV3I1239
Published in: Volume : 3, Issue : 1
Publication Date: 01/04/2015
Page(s): 261-265

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