How to normalize inputs?

[nikolaJovisic]

I managed to run the provided trained whole image models on my images, but the predictions are not right at all. The problem must be in preprocessing the images. How to know the exact values of mean and std used for standardization of input, how to know if histogram equalization has been conducted and all the other parameters needed to preprocess the data for usage on the provided models? Xie xie in advance.