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Table 4 Performance of BP neural network with different number of hidden layer nodes

From: An image denoising method based on BP neural network optimized by improved whale optimization algorithm

Size of the sliding window Number of hidden layer node PSNR
3*3 13 18.67
15 20.67
17 19.74
5*5 13 22.17
15 23.57
17 21.91
7*7 13 23.44
15 23.55
17 22.82