Table 4.

Confusion matrix obtained for the best ensemble model with fine-tuning and softmax for different stages of COVID-19 disease (normal, early stage, progressive stage, peak stage, and absorption stage) on the test data set (360 frames)

Reference (diagnosis of radiologist)	Estimated labels by the proposed method
	Normal	Early stage	Progressive stage	Peak stage	Absorption stage
Normal	150	1	7	0	2
Early stage	0	36	2	0	2
Progressive stage	1	2	39	3	0
Peak stage	1	1	1	54	3
Absorption stage	1	1	1	0	52