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Automated Detection and Grading of Diabetic Maculopathy in Digital Retinal Images

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Abstract

Diabetic maculopathy is one of the retinal abnormalities in which a diabetic patient suffers from severe vision loss due to the affected macula. It affects the central vision of the person and causes blindness in severe cases. In this article, we propose an automated medical system for the grading of diabetic maculopathy that will assist the ophthalmologists in early detection of the disease. The proposed system extracts the macula from digital retinal image using the vascular structure and optic disc location. It creates a binary map for possible exudate regions using filter banks and formulates a detailed feature vector for all regions. The system uses a Gaussian Mixture Model-based classifier to the retinal image in different stages of maculopathy by using the macula coordinates and exudate feature set. The evaluation of proposed system is performed by using publicly available standard retinal image databases. The results of our system have been compared with other methods in the literature in terms of sensitivity, specificity, positive predictive value and accuracy. Our system gives higher values as compared to others on the same databases which makes it suitable for an automated medical system for grading of diabetic maculopathy.

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The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Department of Computer Engineering, College of E&ME, National University of Sciences and Technology, Rawalpindi, Pakistan

    Anam Tariq, Arslan Shaukat & Shoab A. Khan

  2. Department of Computer and Software Engineering, Bahria University, Islamabad, Pakistan

    M. Usman Akram

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  1. Anam Tariq
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  2. M. Usman Akram
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  3. Arslan Shaukat
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  4. Shoab A. Khan
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Correspondence to Anam Tariq.

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Tariq, A., Akram, M.U., Shaukat, A. et al. Automated Detection and Grading of Diabetic Maculopathy in Digital Retinal Images. J Digit Imaging 26, 803–812 (2013). https://doi.org/10.1007/s10278-012-9549-4

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  • DOI: https://doi.org/10.1007/s10278-012-9549-4

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