Open AccessGreen Channel and Top Hat based Image Enhancement for Diabetic Retinopathy Screening
Author(s) -
Najam A. Sharif,
Ari Azhar,
Nor Hazlyna Harun,
Juhaida Abu Bakar,
Azlina Abdullah,
Yen Fook Chong
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1997/1/012002
Subject(s) - fundus (uterus) , diabetic retinopathy , image quality , artificial intelligence , computer science , peak signal to noise ratio , computer vision , image processing , medicine , retinopathy , optometry , ophthalmology , image (mathematics) , diabetes mellitus , endocrinology
Diabetic Retinopathy remains one of the most feared diabetes complications that could lead to blindness. Image processing techniques have been widely used all around the world for early detection of diabetic retinopathy. However, most techniques used do not focus on the low visual quality problems in the fundus image. Low visual quality of fundus image may lead to difficulty in evaluation by ophthalmologist before reading it out to the patients. Hence, Automated Screening for Diabetic Retinopathy was created to focus on image enhancement of the fundus image. In this study, two main algorithms for image processing have been used which are green channel conversion and top-hat filters. Green channel in fundus image is selected due to better contrast of the features and background compared to the red and blue channel. While Top-hat filter used to details out small features in the fundus image. The evaluation result of the techniques is compared by using Mean-Squared Error (MSE), Peak Signal-to-Noise Ratio (PSNR) and Entropy calculations to measure quality of the enhanced fundus images. Results of image enhancement techniques implemented has proved that quality of the fundus image is improved.