Abstract
The Coronavirus disease 2019 (COVID-19) is the fastest transmittable virus caused by severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2). The detection of COVID-19 using artificial intelligence techniques and especially deep learning will help to detect this virus in early stages which will reflect in increasing the opportunities of fast recovery of patients worldwide. This will lead to release the pressure off the healthcare system around the world. In this research, classical data augmentation techniques along with Conditional Generative Adversarial Nets (CGAN) based on a deep transfer learning model for COVID-19 detection in chest CT scan images will be presented. The limited benchmark datasets for COVID-19 especially in chest CT images are the main motivation of this research. The main idea is to collect all the possible images for COVID-19 that exists until the very writing of this research and use the classical data augmentations along with CGAN to generate more images to help in the detection of the COVID-19. In this study, five different deep convolutional neural network-based models (AlexNet, VGGNet16, VGGNet19, GoogleNet, and ResNet50) have been selected for the investigation to detect the Coronavirus-infected patient using chest CT radiographs digital images. The classical data augmentations along with CGAN improve the performance of classification in all selected deep transfer models. The outcomes show that ResNet50 is the most appropriate deep learning model to detect the COVID-19 from limited chest CT dataset using the classical data augmentation with testing accuracy of 82.91%, sensitivity 77.66%, and specificity of 87.62%.
Highlights
At the end of February 2003, the Chinese population was infected with a severe acute respiratory syndrome (SARS) virus causing in Guangdong province in China
(2) We show that data augmentation and conditional generative adversarial network (CGAN) is an effective technique to generate computerized tomography (CT) images
The proposed model has been tested under four different scenarios, the first scenario is to test the Deep transfer learning (DTL) models with the original COVID-19 CT dataset, the second scenario with data augmentation, the third one with Conditional Generative Adversarial Nets (CGAN), and the last one combines all three scenarios
Summary
At the end of February 2003, the Chinese population was infected with a severe acute respiratory syndrome (SARS) virus causing in Guangdong province in China. The SARS Coronavirus epidemic affected 26 countries and outcomes in more than 8000 cases in 2003. DTL is quickly becoming a critical technique in image/video classification and detection. We introduce DTL models to classify limited COVID-19 chest CT scan digital images. A classifier is used to ensemble the class (COVID/ NonCOVID) outputs of the classification outcomes. The proposed DTL models were evaluated on the COVID-19 CT scan images dataset. The novelty of this research is conducted as follows: (1) The introduced DTL models have end-to-end structure without classical feature. The dataset is organized into 3 folders (train, validation, and test) and contains subfolders for each image category (COVID/ NonCOVID).
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