激光生物学报2016，Vol.25Issue(3)：244-249,6.DOI:10.3969/j.issn.1007-7146.2016.03.010
一种基于视网膜主血管方向的视盘定位及提取方法
Location and Extraction of Optic Disc Based on Direction of Main Blood Vessel
摘要
Abstract
In order to segment optic disc from fundus images,and develop a computer aided diagnosis system,an ap-proach for location and extraction of optic disc based on direction of main blood vessel was established and studied.First-ly,red channel of the original fundus image is coarsely segmented by Otsu thresholding,and candidate regions of optic disc are obtained.Secondly,main blood vessel are extracted in the H channel of the HSV space and their directions are detected.Thirdly,the optic disc is localized by finding out the point with the top response value of the weighted matched filter.Finally,the real optic disc is extracted from candidate regions.The approach is tested on a set which contained 100 fundus images with variable color and brightness.Accuracy reaches 98%.Furthermore,the average time cost in processing an image is 1.3 seconds.Results suggest that the approach is stable and reliable,and can fast and effectively detect optic disc from fundus images.关键词
眼底图像/视盘/图像分割/Otsu 阈值分割Key words
fundus images/optic disc/image segmentation/Otsu threshold分类
医药卫生引用本文复制引用
高玮玮,程武山,王明红,沈建新,左晶..一种基于视网膜主血管方向的视盘定位及提取方法[J].激光生物学报,2016,25(3):244-249,6.基金项目
中央高校基本科研业务费专项（NJ20120007）；江苏省普通高校研究生科研创新计划项目（CXLX11＿0218）资助 （）
