The material has been approximated from just a color map.
Height Field Photogrammetry
The material's displacement map was created using photogrammetry.
Substance Designer (Procedural)
The material was created fully procedurally in Substance Designer.
Substance Designer (Photo based)
The material was created using Substance Designer and premade assets (such as photoscanned elements). This usually results in a bigger file size for the SBSAR file.
Multi Angle Approximation
The material was created using multi-angle approximation. By shining light on a surface from different angles it is possible to create a height profile. This is usually done for leaves.
The material is just a plain photo, no further material processing was done.
This asset is a 3D model that was created using photogrammetry.