4.4 Article

Classification and grading of diabetic retinopathy images using mixture of ensemble classifiers

期刊

JOURNAL OF INTELLIGENT & FUZZY SYSTEMS
卷 41, 期 6, 页码 7407-7419

出版社

IOS PRESS
DOI: 10.3233/JIFS-211364

关键词

Diabetic retinopathy; convolutional neural network(CNN); feature extraction; ensemble of classifiers

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This study proposes a method using a Mixture of Ensemble Classifiers to classify and grade diabetic retinopathy images, achieving accuracies of 95.8% and 96.2% respectively. Automatic classification of diabetic retinopathy using convolutional neural networks and hierarchical features is challenging, but effective in this research.
Diabetic Retinopathy (DR) is one of the most common diabetic diseases that affect the retina's blood vessels. Too much of the glucose level in blood leads to blockage of blood vessels in the retina, weakening and damaging the retina. Automatic classification of diabetic retinopathy is a challenging task in medical research. This work proposes a Mixture of Ensemble Classifiers (MEC) to classify and grade diabetic retinopathy images using hierarchical features. We use an ensemble of classifiers such as support vector machine, random forest, and Adaboost classifiers that use the hierarchical feature maps obtained at every pooling layer of a convolutional neural network (CNN) for training. The feature maps are generated by applying the filters to the output of the previous layer. Lastly, we predict the class label or the grade for the given test diabetic retinopathy image by considering the class labels of all the ensembled classifiers. We have tested our approaches on the E-ophtha dataset for the classification task and the Messidor dataset for the grading task. We achieved an accuracy of 95.8% and 96.2% for the E-ophtha and Messidor datasets, respectively. A comparison among prominent convolutional neural network architectures and the proposed approach is provided.

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