Method for Comparing First Computer-Aided 3D Model with a Second Computer-Aided 3D Model

A computer-implemented method for comparing successively a first computer-aided 3D model with a second computer-aided 3D model, the first model being described by a first topology comprising vertices, edges and faces of the first model and the second model being described by a second topology comprising vertices, edges and faces of the second model, the method being executed by a scanning component, a vertex mapping component, an edge mapping component and a face mapping component and comprising the following operations:

• scanning the first topology and the second topology;
• deriving from the first topology a first topological map relating vertices, edges and faces of the first model and from the second topology a second topological map relating vertices, edges and faces of the second model;
• determining by means of the topological maps all possible mappings between vertices of the first model and vertices of the second model;
• using those mapped vertices to identify all possible mappings between edges of the first and edges of the second model;
• using those mapped edges to identify all possible mappings between faces of the first and faces of the second model;
• using those mapped elements to linearly compare the first and the second model for geometrical sameness.