Abstract
Reverse engineering is the solution of engineering to gain digital data from existing objects, and which applied CAD, CAM, CAE, and CAT. And surface reconstruction is the technique for making surfaces from existing objects, and is integral to reverse engineering. When we reconstruct surface, scanned points are gained from existing objects with 3D-coordinate measuring machines, then surface is reconstructed from scanned points. But scanned points sometimes have problems. Surface reconstruction from incomplete points, such as points including noise, is hard. So, we suggest a method of surface reconstruction using implicit function based on Multi-level Partition of Unity Implicits, which is robust to incomplete points.