1. A method for producing a 3D computer model of a physical object, said method comprising the following steps a) providing a scanner system, said scanner system comprising i. a scanner, and ii. a computer connectable to and/or integrated in said scanner, said computer comprising a virtual model of said scanner, b) entering shape information of the physical object into the computer, c) creating in said computer a visibility function based on said virtual model and the shape information, said visibility function being capable of evaluating the coverage of areas of interest of the physical object by at least one predetermined scan sequence, d) establishing at least one scan sequence based on the evaluation of the visibility function, e) performing a scan of the physical object using said at least one scan sequence, f) optionally repeating steps d) and e) at least once, g) obtaining a 3D computer model of the physical object, wherein the coverage of areas of the physical object is evaluated by evaluating percentage of are of holes as compared to estimated area of the physical object.