problem about ground truth

I saw the GT was obtained from structured-light scanner in the paper
![Screenshot from 2024-11-28 10-11-58](https://github.com/user-attachments/assets/63a1dd9b-bdde-4f75-9350-aff10274c462)
anyone can give me some instructions about how to get GT 3D model from structured-light scanner ? (assume I have got one)