The method uses a hand-held scanner and a scanning module and can include: providing module reference data concerning the scanning module immobilizing the subject relative to the scanning module obtaining a plurality of depth images of the immobilized subject and module, the depth images being from corresponding different points of view relative to a ground reference determining a position and an orientation of the scanning module in each one of the depth images using the module reference data and forming the virtual model of the subject, including registering the plurality of depth images using the determined position and orientation of the scanning module.
