Missing geometry appears during mesh reconstruction and editing; completing the holes is thus important. To complete the holes of a complex surface effectively

mesh completion based on loop-driven spherical coordinates and iterative closest point (ICP) registration with curvature and normal is presented. First

the user searches for a similar mesh patch and places it around the hole of the mesh. Second

the B-spline curve is utilized to fit the hole boundary of the target. The boundary loop of the source mesh is located on the B-spline. Loop-driven spherical coordinates

which map and deform the source mesh patch to match the target mesh

are then constructed. Finally

Laplacian smoothing and the ICP algorithm with curvature and normal are applied to complete the mesh completion. Two mesh parts are merged smoothly. Experimental results reveal the proposed algorithm's ability to retrieve a missing feature effectively and smoothly. The loop-driven spherical coordinates prevent the application of cage meshes to deformation

and the ICP iteration can complete the registration effectively. Compared with earlier approaches

the proposed algorithm can retrieve a missing feature effectively.