There are already approaches to infer bidirectional reflectance distribution functions (BRDFs, the "true surface properties") and lights: https://nju-3dv.github

There are already approaches to infer bidirectional reflectance distribution functions (BRDFs, the "true surface properties") and lights: https://nju-3dv.github.io/projects/Relightable3DGaussian/ https://nju-3dv.github.io/projects/Relightable3DGaussian/