Identification System Based on Resolution Adjusted 2D Spectrogram of Driver’s ECG for Intelligent Vehicle

Table 5

CNN structure.

Layer		Description
1	Input	65 × 23 × 3
2	2D convolution	8, 3 × 3 conv., stride [1 1]
3	Batch normalization	Output value nor.
4	ReLU	If x > 0 gradient 1 and if x < 0 f(x) = 0
5	Max-pooling	2 × 2 max value, stride [2 2]
6	2D convolution	16, 3 × 3 conv., stride [1 1]
7	Batch normalization	Output value nor.
8	ReLU	If x > 0 gradient 1 and if x < 0 f(x) = 0
9	Max-pooling	2 × 2 max value, stride [2 2]
10	2D convolution	32, 3 × 3 conv., stride [1 1]
11	Batch normalization	Output value nor.
12	ReLU	If x > 0 gradient 1 and if x < 0 f(x) = 0
13	Fully connected	100 fully connected layer
14	Softmax	Softmax