I am new to CNN and PyTorch. I am working on the classification of diabetic ulcers. I have achieved some results using ResNet. I want to do regularization- one of the techniques I am using is augmentation. How normalization helps CNN? The batch below is without normalization and is visually more perceivable to the human eye.

not_normalized840×223 214 KB

Below is the normalized one, which is not well perceivable visually. Then how is it helping CNN?
normalized|690x195 1
How do we choose the values for normalize?
transforms.Normalize((0.485, 0.456, 0.406), (0.229, 0.224, 0.225)