Method and system for providing a digital model of an object

A system for providing a digital model of at least a part of an object referenced to a global coordinate system, comprising:

• (a) an optical device configured for providing a digital model representative of the respective part at a respective relative location with respect to said object, said first digital model being referenced to a local coordinate system associated with said optical device, and wherein said optical device comprises a plurality of visually exposed optical markers, said markers being located at known locations with respect to said optical device referenced to a marker coordinate system;
• (b) an external camera arrangement configured for determining a location of the optical device with respect to said external camera arrangement, based on relating the relative locations of said markers with respect to one another, as they appear from a viewpoint of said external camera arrangement, with the relative locations of respective said markers with respect to one another as referenced to said marker coordinate system, and wherein said viewpoint is at a known location referenced to said global coordinate system;
• and (c) microprocessor device configured for generating a transformed digital model representative of the respective part and referenced to said global coordinate system, based on modifying said first digital model according to said determined location.