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Effect of color information on the diagnostic performance of glaucoma in deep learning using few fundus images.

Abstract：

PURPOSE:The purpose of this study was to evaluate the accuracy of the convolutional neural network (CNN) model in glaucoma identification with three primary colors (red, green, blue; RGB) and split color channels using fundus photographs with a small sample size. METHODS:The dataset was prepared using color fundus photographs captured with a fundus camera (VX-10i, Kowa Co., Ltd., Tokyo, Japan). The training dataset consisted of 200 images, and the validation dataset contained 60 images. In the preprocessing stage, the color channels for the fundus images were separated into red (red model), green (green model), and blue (blue model) using OpenCV on Windows. All images were resized to squares with a size of 512 × 512 pixels for preprocessing before input into the model, and the model was fine-tuned with VGG16. RESULTS:The diagnostic performance was significantly higher in the green model [area under the curve (AUC) 0.946; 95% confidence interval (CI) 0.851-0.982] than in the RGB model (AUC 0.800; 95% CI 0.658-0.893; P = 0.006), red model (AUC 0.746; 95% CI 0.601-0.851; P = 0.002), and blue model (AUC 0.558; 95% CI 0.405-0.700; P < 0.001). CONCLUSION:The present study showed that the green digital filter is useful for structuring CNN models for automatic discrimination of glaucoma using fundus photographs with a small sample size. The present findings suggest that preprocessing, when creating the CNN model, is an important step for the identification of a large number of retinal diseases using color fundus photographs.

journal_name

Int Ophthalmol

journal_title

International ophthalmology

authors

Hirota M,Mizota A,Mimura T,Hayashi T,Kotoku J,Sawa T,Inoue K

doi

10.1007/s10792-020-01485-3

subject

Has Abstract

pub_date

2020-11-01 00:00:00

pages

3013-3022

issue

11

eissn

0165-5701

issn

1573-2630

pii

10.1007/s10792-020-01485-3

journal_volume

40

pub_type

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