RDCNET: Convolutional neural networks for classification of retinopathy disease in unbalanced data cases

Retinopathy disease is a type of retinal disorder, which often occurs, includ- ing hypertensive retinopathy and diabetic hypertension. Detection of retinopathy can be by analyzing the retinal image, using a deep learning approach, but the problem that is often faced is unbalanced data. In this study, a convolutional neural network architec- ture is proposed for the classification of retinopathy using the MESSIDOR database that has been labeled, by duplicating and augmentation of sample images in classes with low numbers of samples using a data generator to overcome the problem of unbalanced data. The experimental results show that the validation and testing accuracy performance on the model with two output classes are 100%, and 87.50%, while on the model with four output classes are 99.38%, and 76.47%. ICIC International