NDLI: Detect of optic disc center based on Gaussian vessel detector and tangent information transform

Content Provider	IEEE Xplore Digital Library
Author	Xiaoying Yang Hamaguchi, S. Yan Sun Shuangjiu Xiao
Copyright Year	2011
Description	Author affiliation: School of Software, Shanghai Jiao Tong University, Shanghai, P.R. China (Xiaoying Yang; Yan Sun; Shuangjiu Xiao) \|\| Applied Digital Equipment, Software Dept., TOSHIBA Digital Media, Engineering Co., Tokyo, Japan (Hamaguchi, S.)
Abstract	Detection of optic disk (OD) in fundus image is a standard procedure before the diagnosis and analysis of various serious ophthalmic pathologies. Manual detection will consume both time and energy. Therefore automatically detection is rather necessary and practical. However, owing to uneven illumination, disorder distribution of optic vessels or noises in the fundus images, this task has constantly been challenging. In this paper, a novel method based on Gaussian vessel detector with contrast tuning, morphology operations and tangent information, is presented to detect OD from retinal fundus images. After converting the color image to grayscale image by its green channel, image contrast is tuned intended for the subsequent vessel detection. Proceeded with Gaussian vessel detector, the search space for the later operation will be restricted to a limited dimension. Next, morphology operations as well as denoising operations guarantee that interferences of trivial vessels or noise eliminated. Eventually, by applying the tangent information transformation on the pre-processed image, the center of the Optic disc is determined. This method achieved a success ratio of 91.3 (74 out of 81 images) in the standard database S.T.A.R.E. The experimental result shows that the proposed method is effective and could approximate the average accuracy of a human observer.
Starting Page	250
Ending Page	254
File Size	657514
Page Count	5
File Format	PDF
ISBN	9781424493517
e-ISBN	9781424493524
DOI	10.1109/BMEI.2011.6098325
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-10-15
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical filters Morphology operations Contrast tuning Biomedical optical imaging Gaussian Vessel Detector Blood vessels Optical imaging Retina Educational institutions Optic Disc Detection Tangent Information Transform
Content Type	Text
Resource Type	Article

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