Automatic localization of the optic disc by combining vascular and intensity information

被引：49

作者：

Mendonca, Ana Maria ^{[1
,2
,3
]}

Sousa, Antonio ^{[1
,4
]}

Mendonca, Luis ^{[5
]}

Campilho, Aurelio ^{[1
,3
]}

机构：

[1] Univ Porto, INEB Inst Engn Biomed, P-4100 Oporto, Portugal

[2] Univ Porto, Dept Elect & Comp Engn, Fac Engn, P-4100 Oporto, Portugal

[3] Univ Porto, FEUP Fac Engn, P-4100 Oporto, Portugal

[4] Inst Politecn Porto, ISEP Inst Super Engn, Oporto, Portugal

[5] Hosp Braga, Serv Oftalmol, Braga, Portugal

来源：

COMPUTERIZED MEDICAL IMAGING AND GRAPHICS | 2013年 / 37卷 / 5-6期

关键词：

Retinal image analysis; Optic disc localization; Retinal vessel segmentation; Entropy;

D O I：

10.1016/j.compmedimag.2013.04.004

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

This paper describes a new methodology for automatic location of the optic disc in retinal images, based on the combination of information taken from the blood vessel network with intensity data. The distribution of vessel orientations around an image point is quantified using the new concept of entropy of vascular directions. The robustness of the method for OD localization is improved by constraining the search for maximal values of entropy to image areas with high intensities. The method was able to obtain a valid location for the optic disc in 1357 out of the 1361 images of the four datasets. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：409 / 417

页数：9

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