Via merging vertices in the overlapping regions

mesh stitching with large overlaps was achieved to avoid the filling-hole operations and small triangles produced by clipping edges.Firstly

the overlapping regions were detected by oriented bounding box.With the method of moving least squares

the vertices in the overlapping regions were smoothed in order to reduce the noise produced by inaccurate alignment.Then

we merged the vertices with distance less than given tolerance and triangulated the remaining vertices with the constraint of common boundary edges.The final mesh was created by stitching the several meshes via the common boundary edges.Experiments show that this method can create merged mesh with good quality and the performance is acceptable in practice.