Augmented Face - cannonical face texture file

Hello,

I'am currently working the Augmented face to put a custom mask on the face.
On android with ARCore, they provide a canonical face texture as png file which represent the face mesh. We can modify and draw on this png file to render a custom face.

On Arkit, i'am looking for the same kind of file face texture as png file (showing exactly the edge and face).
I've seen they provide a .obj file but I need the face as png.

Do you know where I could get it?

Thanks you