title: Automatic optic disc segmentation with peripapillary atrophy elimination.
abstract: Optic disc segmentation from retinal fundus image is a fundamental but important step for automatic glaucoma diagnosis. In this paper, an optic disc segmentation method is proposed based on peripapillary atrophy elimination. The elimination is done through edge filtering, constraint elliptical Hough transform and peripapillary atrophy detection. With the elimination, edges that are likely from non-disc structures especially peripapillary atrophy are excluded to make the segmentation more accurate. The proposed method has been tested in a database of 650 images with disc boundaries marked by trained professionals manually. The experimental results by the proposed method show average m(1), m(2) and m(VD) of 10.0%, 7.4% and 4.9% respectively. It can be used to compute cup to disc ratio as well as other features for application in automatic glaucoma diagnosis systems.
authors.affiliation: Institute for Infocomm Research, A*Star, Singapore.
authors.forename: Jun
authors.initials: J
authors.lastname: Cheng
authors.forename: Jiang
authors.initials: J
authors.lastname: Liu
authors.forename: Damon Wing Kee
authors.initials: DW
authors.lastname: Wong
authors.forename: Fengshou
authors.initials: F
authors.lastname: Yin
authors.forename: Carol
authors.initials: C
authors.lastname: Cheung
authors.forename: Mani
authors.initials: M
authors.lastname: Baskaran
authors.forename: Tin
authors.initials: T
authors.lastname: Aung
authors.forename: Tien Yin
authors.initials: TY
authors.lastname: Wong
mesh_terms: D000465:Algorithms; D001331:Automation; D016208:Databases, Factual; D003936:Diagnosis, Computer-Assisted / Q000379:methods; D003952:Diagnostic Imaging / Q000379:methods*; D001330:Electronic Data Processing; D005654:Fundus Oculi; D005901:Glaucoma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D007091:Image Processing, Computer-Assisted; D015233:Models, Statistical; D009896:Optic Atrophy / Q000473:pathology*; D009898:Optic Disk / Q000473:pathology*; D011859:Radiography; D015203:Reproducibility of Results