Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/13973
Title: Certain investigations on image processing techniques for early detection of diabetic retinopathy
Researcher: Vijaya Kumari V
Guide(s): Suryananarayanan N
Keywords: Image processing techniques
Diabetic retinopathy
Upload Date: 11-Dec-2013
University: Anna University
Completed Date: 01/12/2010
Abstract: Diabetic related eye diseases are the most common cause of blindness in the world. This thesis suggests methods for the early detection of Diabetic Retinopathy during mass screening in rural areas. Current methods used by the ophthalmologists are manual examination of the eye and it has lesser accuracy. Density analysis is less efficient which leads to think of the automated analysis. The current methods were studied in consultation with the ophthalmologists. The image processing techniques applied to the retinal images automatically detect the presence of any abnormalities during screening. These methods are easy to use and helpful for the Physicians in the screening of Diabetic retinopathy. The optic disk is the point in the eye where the optic nerves enter the retina. Precise localization of optic disk boundary is an important sub problem, which needs attention in ophthalmic image processing. The Principal Component analysis (PCA) was applied only to the clusters and the output of the PCA was given as input for the propagation through radii method .This saves time and gives good results with higher PSNR value. Exudates are the primary signs of diabetic retinopathy which are the cause for blindness. Exudates can be identified as areas with hard white or yellowish color with varying sizes, shapes and locations. Automated detection of optic disk, exudates, blood vessel extraction and also optic disk and exudates detection through the extraction of blood vessel were done using Matlab software. This thesis gives methods for the early detection of diabetic retinopathy using computer and paves the way for creating awareness during screening. The image obtained from the fundus camera during screening was fed to the computer and it shows whether the image is normal or affected by diabetes. In future, using this approach the microaneurysm and haemorrhages can also be detected by which many abnormalities in the retinal image can be analyzed.
Pagination: xvii, 134p.
URI: http://hdl.handle.net/10603/13973
Appears in Departments:Faculty of Information and Communication Engineering

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01_title.pdfAttached File33.55 kBAdobe PDFView/Open
02_certificates.pdf125.06 kBAdobe PDFView/Open
03_abstract.pdf14.82 kBAdobe PDFView/Open
04_acknowledgement.pdf15.04 kBAdobe PDFView/Open
05_contents.pdf46.34 kBAdobe PDFView/Open
06_chapter 1.pdf444.2 kBAdobe PDFView/Open
07_chapter 2.pdf130.48 kBAdobe PDFView/Open
08_chapter 3.pdf406.43 kBAdobe PDFView/Open
09_chapter 4.pdf309.56 kBAdobe PDFView/Open
10_chapter 5.pdf517.27 kBAdobe PDFView/Open
11_chapter 6.pdf282 kBAdobe PDFView/Open
12_chapter 7.pdf24.71 kBAdobe PDFView/Open
13_appendix 1.pdf16.63 kBAdobe PDFView/Open
14_references.pdf47.59 kBAdobe PDFView/Open
15_publications.pdf17.64 kBAdobe PDFView/Open
16_vitae.pdf11.41 kBAdobe PDFView/Open


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