Table 1.

Brief description of the datasets

Dataset	Imaging technology	Target categories	No. of COVID-19 images	No. of Non-COVID images	Splitting ratios
COVID CT scans [31]	CT scan	COVID-19 and Normal	288	288	70–30
Augmented COVID dataset [32]	X-ray	COVID-19 and Normal	304	304	70–30
	X-ray	COVID-19 and Normal	304	304	70–30
COVID-19 radiography [33]	X-ray	COVID-19 and Pneumonia	912	1345	70–30
Combined dataset [34]	CT scan and X-ray	COVID-19 and Normal	3065	3065	70–30