Journal
PATTERN RECOGNITION LETTERS
Volume 152, Issue -, Pages 1-7Publisher
ELSEVIER
DOI: 10.1016/j.patrec.2021.08.035
Keywords
Xception; Densenet-121; Densenet-201; COVID-19; Imagenet
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The article presents a COVID-19 detection method based on deep learning models and explanation algorithms, demonstrating its potential role in diagnosing and monitoring COVID-19 patients through experiments.
COVID-19 is an infectious and contagious virus. As of this writing, more than 160 million people have been infected since its emergence, including more than 125,0 0 0 in Algeria. In this work, We first collected a dataset of 4986 COVID and non-COVID images confirmed by RT-PCR tests at Tlemcen hospital in Algeria. Then we performed a transfer learning on deep learning models that got the best results on the ImageNet dataset, such as DenseNet121, DenseNet201, VGG16, VGG19, Inception Resnet-V2, and Xception, in order to conduct a comparative study. Therefore, We have proposed an explainable model based on the DenseNet201 architecture and the GradCam explanation algorithm to detect COVID-19 in chest CT images and explain the output decision. Experiments have shown promising results and proven that the introduced model can be beneficial for diagnosing and following up patients with COVID-19. (c) 2021 Elsevier B.V. All rights reserved.
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