Optic Disk Localization for Gray-Scale Retinal Images Based on Patch Filtering

Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8815)


In this paper, an optic disk (OD) localization method is proposed for the retinal images based on a novel patch filtering approach. The patch filtering has been performed sequentially based on clustering in two stages. In the first stage, the patches are selected exploiting an ’isotropic’ measure based on the ratio of maximum and minimum eigenvalues of the moment matrix representing the structure tensor. In the second stage, the patch filtering is based on the saliency measure. Finally, the optic disk is located from the centroids of the selected patches. Promising results are obtained for the low-contrast pathological retinal images using STARE database providing high localization accuracy.


Optic disk localization Patch filtering Retinal image 


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  1. 1.Toronto Rehabilitation InstituteUniversity of TorontoTorontoCanada
  2. 2.INESC Technology and Science and the Faculdade de EngenhariaUniversidade do PortoPortoPortugal
  3. 3.Department of Electrical and Computer EngineeringUniversity of WaterlooWaterlooCanada

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