Creating and storing 7D digital twins

The possibility of creating digital twins of physical objects for cultural heritage and electronics industry, is explored in this paper. Anyway, the presented approach could be applied to digital objects of any nature. The proposed seven-dimensional (7D) digital twin model extends beyond the standard three-dimensional voxel representation, incorporating full color representation via XYZ color coordinates, surface structure through optical coherence tomography, surface composition through spectral fingerprint and surface sound. Various technologies that can be used for this new type of 7D scanning are discussed, as well as a proposed file format for storing these digital twins. The benefits and current limitations of this process are also explored, with suggested strategies for overcoming these limitations. The creation of 7D digital twins presents new opportunities for preservation, study, and access to physical objects, and has the potential to revolutionize the way cultural heritage is experienced and shared. Exploration on combining digital twins with machine learning has also been done.