Optic disk and cup boundary detection using regional information

Authors:
Gopal Datt Joshi;Jayanthi Sivaswamy;Kundan Karan;S. R. Krishnadas
Affiliations:
CVIT, IIIT Hyderabad, Hyderabad, India;CVIT, IIIT Hyderabad, Hyderabad, India;Aravind Eye Care System, Madurai, India;Aravind Eye Care System, Madurai, India
Venue:
ISBI'10 Proceedings of the 2010 IEEE international conference on Biomedical imaging: from nano to Macro
Year:
2010

Citing 3
Cited 1

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Abstract

The shape deformation within the optic disk (OD) is an important indicator for the detection of glaucoma. In this paper, relevant disk parameters are estimated using the OD and cup boundaries. A deformable model guided by regional statistics is used to detect the OD boundary. A cup boundary detection scheme is presented based on the appearance of pallor in Lab colour space and the expected cup symmetry. The proposed scheme is tested on 170 images comprising 40 normal and 130 glaucomatous images. The proposed method gives a mean error 0.030 for normal and 0.121 for glaucomatous images in the estimation of cup-to-disk ratio which compares well with reported figures in literature.