Using a 3D scanning application on your smartphone or even by proper 3D scanning device you can scan a digital representation of the object or person. The scan has a point cloud with depth and the color etc. This point cloud can be converted to mesh which can be opened in a 3D modeling application.3D Measure Up - being into this Field from so Many Years provides 3D Scanning Application | 3D Modelling Application | 3D Measurement Service