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Optic disc and cup segmentation by automatic thresholding with morphological operation for glaucoma evaluation

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Abstract

This research proposes a robust method for disc localization and cup segmentation that incorporates masking to avoid misclassifying areas as well as forming the structure of the cup based on edge detection. Our method has been evaluated using two fundus image datasets, namely: D-I and D-II comprising of 60 and 38 images, respectively. The proposed method of disc localization achieves an average \(F_{\mathrm{score}}\) of 0.96 and average boundary distance of 7.7 for D-I, and 0.96 and 9.1, respectively, for D-II. The cup segmentation method attains an average \(F_{\mathrm{score}}\) of 0.88 and average boundary distance of 13.8 for D-I, and 0.85 and 18.0, respectively, for D-II. The estimation errors (mean ± standard deviation) of our method for the value of vertical cup-to-disc diameter ratio against the result of the boundary by the expert of D-I and D-II have similar value, namely \(0.04 \pm 0.04\). Overall, the result of our method indicates its robustness for glaucoma evaluation.

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Acknowledgements

The authors would like to thank Dr. Sardjito Hospital and Dr. YAP Eye Hospital in Yogyakarta, Indonesia, for providing the fundus images.

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Authors and Affiliations

  1. Department of Computer Science and Electronics, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, 55281, Indonesia

    Anindita Septiarini, Agus Harjoko & Reza Pulungan

  2. Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta, 55281, Indonesia

    Retno Ekantini

  3. Department of Computer Science, Mulawarman University, Samarinda, 75123, Indonesia

    Anindita Septiarini

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  1. Anindita Septiarini
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  2. Agus Harjoko
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Correspondence to Anindita Septiarini.

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Septiarini, A., Harjoko, A., Pulungan, R. et al. Optic disc and cup segmentation by automatic thresholding with morphological operation for glaucoma evaluation. SIViP 11, 945–952 (2017). https://doi.org/10.1007/s11760-016-1043-x

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  • DOI: https://doi.org/10.1007/s11760-016-1043-x

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