Localizing Optic Disc in Retinal Image Automatically with Entropy Based Algorithm

Algorithm 1

Proposed algorithm: localization of optic disk.

Input: Retina Image

Output: Retina Image with marking the Optic Disc location

Step: Extract Green channel Image ()

Step: Divide Image () into () patches ()

Stepfor each patch

  (i) Compute entropy value

StepPick the patchwith the maximum value

StepFormulate new regionthat is:

StepDivideinto () overlap patches ()

Stepfor each patch

  (i) Compute entropy value

StepPick the patch with maximum value

StepMarking the center location of this patch with small square into produce new image