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Combination of Global Features for the Automatic Quality Assessment of Retinal Images
Diabetic retinopathy (DR) is one of the most common causes of visual loss in developed countries. Computer-aided diagnosis systems aimed at detecting DR can reduce the workload of ophthalmologists in screening programs. Nevertheless, a large number of retinal images cannot be analyzed by physicians...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7514792/ https://www.ncbi.nlm.nih.gov/pubmed/33267025 http://dx.doi.org/10.3390/e21030311 |
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author | Jiménez-García, Jorge Romero-Oraá, Roberto García, María López-Gálvez, María I. Hornero, Roberto |
author_facet | Jiménez-García, Jorge Romero-Oraá, Roberto García, María López-Gálvez, María I. Hornero, Roberto |
author_sort | Jiménez-García, Jorge |
collection | PubMed |
description | Diabetic retinopathy (DR) is one of the most common causes of visual loss in developed countries. Computer-aided diagnosis systems aimed at detecting DR can reduce the workload of ophthalmologists in screening programs. Nevertheless, a large number of retinal images cannot be analyzed by physicians and automatic methods due to poor quality. Automatic retinal image quality assessment (RIQA) is needed before image analysis. The purpose of this study was to combine novel generic quality features to develop a RIQA method. Several features were calculated from retinal images to achieve this goal. Features derived from the spatial and spectral entropy-based quality (SSEQ) and the natural images quality evaluator (NIQE) methods were extracted. They were combined with novel sharpness and luminosity measures based on the continuous wavelet transform (CWT) and the hue saturation value (HSV) color model, respectively. A subset of non-redundant features was selected using the fast correlation-based filter (FCBF) method. Subsequently, a multilayer perceptron (MLP) neural network was used to obtain the quality of images from the selected features. Classification results achieved 91.46% accuracy, 92.04% sensitivity, and 87.92% specificity. Results suggest that the proposed RIQA method could be applied in a more general computer-aided diagnosis system aimed at detecting a variety of retinal pathologies such as DR and age-related macular degeneration. |
format | Online Article Text |
id | pubmed-7514792 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-75147922020-11-09 Combination of Global Features for the Automatic Quality Assessment of Retinal Images Jiménez-García, Jorge Romero-Oraá, Roberto García, María López-Gálvez, María I. Hornero, Roberto Entropy (Basel) Article Diabetic retinopathy (DR) is one of the most common causes of visual loss in developed countries. Computer-aided diagnosis systems aimed at detecting DR can reduce the workload of ophthalmologists in screening programs. Nevertheless, a large number of retinal images cannot be analyzed by physicians and automatic methods due to poor quality. Automatic retinal image quality assessment (RIQA) is needed before image analysis. The purpose of this study was to combine novel generic quality features to develop a RIQA method. Several features were calculated from retinal images to achieve this goal. Features derived from the spatial and spectral entropy-based quality (SSEQ) and the natural images quality evaluator (NIQE) methods were extracted. They were combined with novel sharpness and luminosity measures based on the continuous wavelet transform (CWT) and the hue saturation value (HSV) color model, respectively. A subset of non-redundant features was selected using the fast correlation-based filter (FCBF) method. Subsequently, a multilayer perceptron (MLP) neural network was used to obtain the quality of images from the selected features. Classification results achieved 91.46% accuracy, 92.04% sensitivity, and 87.92% specificity. Results suggest that the proposed RIQA method could be applied in a more general computer-aided diagnosis system aimed at detecting a variety of retinal pathologies such as DR and age-related macular degeneration. MDPI 2019-03-21 /pmc/articles/PMC7514792/ /pubmed/33267025 http://dx.doi.org/10.3390/e21030311 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Jiménez-García, Jorge Romero-Oraá, Roberto García, María López-Gálvez, María I. Hornero, Roberto Combination of Global Features for the Automatic Quality Assessment of Retinal Images |
title | Combination of Global Features for the Automatic Quality Assessment of Retinal Images |
title_full | Combination of Global Features for the Automatic Quality Assessment of Retinal Images |
title_fullStr | Combination of Global Features for the Automatic Quality Assessment of Retinal Images |
title_full_unstemmed | Combination of Global Features for the Automatic Quality Assessment of Retinal Images |
title_short | Combination of Global Features for the Automatic Quality Assessment of Retinal Images |
title_sort | combination of global features for the automatic quality assessment of retinal images |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7514792/ https://www.ncbi.nlm.nih.gov/pubmed/33267025 http://dx.doi.org/10.3390/e21030311 |
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