Digital Image Processing for Ophthalmology

Digital Image Processing for Ophthalmology

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The monitoring of the effects of retinopathy on the visual system can be assisted by analyzing the vascular architecture of the retina. This book presents methods based on Gabor filters to detect blood vessels in fundus images of the retina. Forty images of the retina from the Digital Retinal Images for Vessel Extraction (DRIVE) database were used to evaluate the performance of the methods. The results demonstrate high efficiency in the detection of blood vessels with an area under the receiver operating characteristic curve of 0.96. Monitoring the openness of the major temporal arcade (MTA) could facilitate improved diagnosis and optimized treatment of retinopathy. This book presents methods for the detection and modeling of the MTA, including the generalized Hough transform to detect parabolic forms. Results obtained with 40 images of the DRIVE database, compared with hand-drawn traces of the MTA, indicate a mean distance to the closest point of about 0.24mm. This book illustrates applications of the methods mentioned above for the analysis of the effects of proliferative diabetic retinopathy and retinopathy of prematurity on retinal vascular the DCP errors for the STA and the ITA models, obtained with MDCP-based selection, as compared to the hand-drawn traces ofthe STA and the ITA, respectively. Figures 6.21 (a) and (b) illustrate the DCP errors for the STA and the ITAanbsp;...

Title:Digital Image Processing for Ophthalmology
Author: Faraz Oloumi, Rangaraj M. Rangayyan, Anna L. Ells
Publisher:Morgan & Claypool Publishers - 2014-05-01

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