Interpretation of line drawings with multiple views

A method for interpreting engineering drawings with multiple orthogonal views is presented. The number of views required is not fixed and can range from a minimum of two to a maximum of six using a standard drawing layout. The method call handle input views with small errors or inaccuracies and still produce a valid interpretation. The solution is based on a bottom-up approach in which candidate vertices and edges are used to generate a set of possible faces which are in turn assembled into enclosures representing the final object. All possible interpretations consistent with the input views are found, and inconsistent input views are recognized by the fact that no possible consistent interpretation can be obtained