Normalize 2D array given mean and std value
Normalization is: (X - Mean) / Deviation
So do just that: (2d_data - mean) / std
l have a dataset called 2d_data which has a dimension=(44500,224,224) such that 44500 is the number of sample. 
l would like to normalize this data set using the following mean and std values :
mean=0.485 and std=0.229
How can l do that ?
Thank you