Q. Abbas, Imran Qureshi, Mostafa E.A. Ibrahim. An Automatic Detection and Classification System of Five Stages for Hypertensive Retinopathy Using Semantic and Instance Segmentation in DenseNet Architecture. MDPI sensors, 21(20), 6936; https://doi.org/10.3390/s21206936
sensors • 2021
Publication Information
Authors
Qaisar Abbas; Imran Qureshi; Mostafa E.A. Ibrahim
Keywords
retinal fundus images; diabetic retinopathy; hypertensive retinopathy; deep-neural network; semantic and instance-based segmentation; transfer learning; perceptual-oriented color space; DenseNet architecture; loss function
Journal
sensors
Publisher
MDPI
Volume
21
Issue
20
Pages
25
publication.type
International
Paper Link
Open Link
Supplementary Materials
Not Available
Abstract
The stage and duration of hypertension are connected to the occurrence of Hypertensive Retinopathy (HR) of eye disease. Currently, a few computerized systems have been developed to recognize HR by using only two stages. It is difficult to define specialized features to recognize five grades of HR. In addition, deep features have been used in the past, but the classification accuracy is not up-to-the-mark. In this research, a new hypertensive retinopathy (HYPER-RETINO) framework is developed to grade the HR based on five grades. The HYPER-RETINO system is implemented based on pre-trained HR-related lesions. To develop this HYPER-RETINO system, several steps are implemented such as a preprocessing, the detection of HR-related lesions by semantic and instance-based segmentation and a DenseNet architecture to classify the stages of HR. Overall, the HYPER-RETINO system determined the local regions within input retinal fundus images to recognize five grades of HR. On average, a 10-fold cross-validation test obtained sensitivity (SE) of 90.5%, specificity (SP) of 91.5%, accuracy (ACC) of 92.6%, precision (PR) of 91.7%, Matthews correlation coefficient (MCC) of 61%, F1-score of 92% and area-under-the-curve (AUC) of 0.915 on 1400 HR images. Thus, the applicability of the HYPER-RETINO method to reliably diagnose stages of HR is verified by experimental findings.
Staff Members - Benha University