Abstract: Based on CMM data, the some critical techniques has been researched: boundary fitting, characteristic identifying, surface patch reconstructing, smooth matching considering the feature of mouse data. By employing cubic B-spline curves to fit boundary curves, differential coefficient geometry method to do surface characteristic identifying and division, and pulling and molding methods to accomplish surface patch reconstruction, the mouse model is finally fulfilled through surface patch intersecting, cutting out and transition.

Key words: reverse engineering, surface reconstruction, B-spline curves, points cloud data