A Medical Imaging Review for COVID-19 Detection and its Comparison to Pneumonia

COVID-19 has claimed millions of lives and devastated economies worldwide. In efforts to control and limit the spread of COVID-19 many early detection methods are reviewed in this survey. Pneumonia has proven to be closely related to COVID-19 in how it appears on X-rays. This can affect the accuracy of diagnosis for both Pneumonia and COVID-19 when using X-ray imaging. Therefore, this survey will analyze current leading, highly accurate models for COVID-19 detection and its comparison to Pneumonia. These models adopted a variety of different approaches and performance metrics that this survey reviews. The current leading models at detecting COVID-19 are VGG-19, ResNet-50, and Histogram of Oriented Gradients in conjunction with the Support Vector Machines approach.