Photogrammetry is the science and technology of obtaining reliable information about physical objects and the environment through the process of recording, measuring and interpreting photographic images and patterns of electromagnetic radiant imagery and other phenomena. This facinating technick has taken a long way and is developping even more with  3D Gaussian splatting \\ from there you can take it further in 3d programs like unreal engine. We have a 75 camera setup which makes it possible to make headscans in full resolution. Full body scans are ok but medium quality, see examples // we will dubble our setup in september because whatever the theorie (less camera's full frame or more camera's aps-c) , data does matter, and we go for the camera count. Research is needed in polarized lighting. It can give issues when direct and indirect flashlight is stitched together.