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A novel method for retinal optic disc detection using bat meta-heuristic algorithm.

Normally, the optic disc detection of retinal images is useful during the treatment of glaucoma and diabetic retinopathy. In this paper, the novel preprocessing of a retinal image with a bat algorithm (BA) optimization is proposed to detect the optic disc of the retinal image. As the optic disk is a...

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Published in:Medical & Biological Engineering & Computing Vol. 56; no. 11; pp. 2015 - 2025
Main Authors: Abdullah, Ahmad S., Özok, Yasa Ekşioğlu, Rahebi, Javad
Format: Journal Article
Published: Springer Nature Nov2018
Online Access:View this record in EBSCOhost
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      jtl: Medical & Biological Engineering & Computing
      issn: 01400118
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      dt: Nov2018
      vid: 56
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      pub: Springer Nature
      place: New York, New York
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        10.1007/s11517-018-1840-1
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        atl: A novel method for retinal optic disc detection using bat meta-heuristic algorithm.
      aug:
        au:
          Abdullah, Ahmad S.
          Özok, Yasa Ekşioğlu
          Rahebi, Javad
        affil: Altinbas University, Istanbul, Turkey
      sug:
        subj:
          Algorithms
          Optic Nerve Anatomy and Histology
          Optic Nerve Pathology
          Retina Anatomy and Histology
          Image Interpretation, Computer Assisted Methods
          Retina Pathology
          Retinal Diseases Diagnosis
          Resource Databases
          Ophthalmoscopy Methods
          Interview Guides
      ab: Normally, the optic disc detection of retinal images is useful during the treatment of glaucoma and diabetic retinopathy. In this paper, the novel preprocessing of a retinal image with a bat algorithm (BA) optimization is proposed to detect the optic disc of the retinal image. As the optic disk is a bright area and the vessels that emerge from it are dark, these facts lead to the selected segments being regions with a great diversity of intensity, which does not usually happen in pathological regions. First, in the preprocessing stage, the image is fully converted into a gray image using a gray scale conversion, and then morphological operations are implemented in order to remove dark elements such as blood vessels, from the images. In the next stage, a bat algorithm (BA) is used to find the optimum threshold value for the optic disc location. In order to improve the accuracy and to obtain the best result for the segmented optic disc, the ellipse fitting approach was used in the last stage to enhance and smooth the segmented optic disc boundary region. The ellipse fitting is carried out using the least square distance approach. The efficiency of the proposed method was tested on six publicly available datasets, MESSIDOR, DRIVE, DIARETDB1, DIARETDB0, STARE, and DRIONS-DB. The optic disc segmentation average overlaps and accuracy was in the range of 78.5-88.2% and 96.6-99.91% in these six databases. The optic disk of the retinal images was segmented in less than 2.1 s per image. The use of the proposed method improved the optic disc segmentation results for healthy and pathological retinal images in a low computation time. Graphical abstract ᅟ.
      pubtype: Academic Journal
      doctype: Journal Article
      ougenre: Article
    language: English
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