1. State Key Lab of CAD & CG, Zhejiang University, Hangzhou 310028, China;
2. Teaching and Research Section of Mathematics, Nanjing EconomicCollege, Nanjing, 210003, China
Abstract：A method for interpolating 3D data with bi-arc spline was introduced in this paper， the method is very robust for any 3D data sequences. The global G1 continuity can be hold w here the spline curve is open or closed.
