Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0031-3203(03)00052-9
Title: Boundary detection of optic disk by a modified ASM method
Authors: Li, H. 
Chutatape, O.
Keywords: ASM
Boundary detection
Fundus image
Optic disk
PCA
Issue Date: 2003
Source: Li, H., Chutatape, O. (2003). Boundary detection of optic disk by a modified ASM method. Pattern Recognition 36 (9) : 2093-2104. ScholarBank@NUS Repository. https://doi.org/10.1016/S0031-3203(03)00052-9
Abstract: A new algorithm to automatically detect the boundary of optic disk in color fundus images is proposed. The optic disk is located by principal component analysis (PCA) based model, which is employed to initialize active shape model (ASM) to detect the disk boundary. ASM is modified with two aspects: one is the self-adjusting weight in the transformation from shape space to image space; the other is exclusion of outlying points in obtaining shape parameters. The modifications make the proposed algorithm more robust and converge faster than the original ASM method, especially in the case where the edge of optic disk is weak or occluded by blood vessels. © 2003 Pattern Recognition Society. Published by Elsevier Science Ltd. All rights reserved.
Source Title: Pattern Recognition
URI: http://scholarbank.nus.edu.sg/handle/10635/39253
ISSN: 00313203
DOI: 10.1016/S0031-3203(03)00052-9
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