First of all,
I would like to say hello to Corona users.
Guys I have a short deadline for my interior work and I am struggling with carpet material like this one attached to this message.
I would be very thankful for any help.
Questions about this type of material pop up from time to time. No wonder, since it’s really tricky to setup. I would either recommend using hair and fur or CScatter (if it has to be 3d), or following Juraj’s guides from this post(if it can be just a material): Juraj's Renderings thread - Corona Common :: Gallery - Chaos Forum
Honestly it can’t be done convincingly by scatter (with direction) or hair&fur. Hair&Fur should just be left alone, it looks terrible in 99.9 cases.
The best look in this particular case is also the simplest, most straightforward solution : The very exact photo of this carpet in this state from top, plus displacement (of any repeated pattern, not B&W map of this texture)