unity3d nft marker how to make

Helo Guys,

I've ran into a very deep trouble within a very long time of googling havent found answers. so here it is.

i'm trying to make Augmented Reality without any commercial plugins i have to pay for (vuforia) in unity3d, this program i will send to android.

i've messing around with vuforia, kudan, and other, but i want more power with my apps i can control myself.

i want to make nft marker based augmented reality, i've tried artoolkit, but the explanation and samples only get into generating .fset .iset .fset3 file but it stopped there, no info about generating the .patt file needed nor info about where to put those dataset files.

i've tried using openspace3d, but also only generating fset iset file, no .patt file.

my question is : how to generate .patt file, and if i have the dataset file (iset fset fset3) how do i proceed on creating my own custom nft marker augmented reality in unity3d?