@davide445 I followed this tutorial : https://tolas.wordpress.com/2009/05/26/tutorial-how-to-equalize-textures-in-photoshop/ using Affinity Photo (all the actions are there) and got a very succesful result with an Oak texture - High Pass is under Sharpen.
To add a couple more programs to the mix - I've found the online normal map generator very capable/useful : http://cpetry.github.io/NormalMap-Online/
and I found this one recently but have not really got into it yet! so don't ask me how to use it
http://pixaflux.com/
Best wishes
Mark
emptyT got a reaction from Lisbon in Normalize illumination for texture creation