Table 2. A summary of the four CNNs architectures.

CNN Structure	Number of layers	Size of input	Size of output
AlexNet	23	227 × 227	4,096
ResNet-50	50	224 × 224	2,048
DarkNet-19	19	256 × 256	8 and 10
DenseNet-201	201	224 × 224	1,920