A symmetric non-stationary subdivision scheme

Abstract

This paper proposes a new family of symmetric 4-point ternary non-stationary subdivision schemes that can generate the limit curves of C 3 continuity. The continuity of this scheme is higher than the existing 4-point ternary approximating schemes. The proposed scheme has been developed using trigonometric B-spline basis functions and analyzed using the theory of asymptotic equivalence. It has the ability to reproduce or regenerate the conic sections, trigonometric polynomials and trigonometric splines as well. Some graphical and numerical examples are being considered, by choosing an appropriate tension parameter 0 < α < π/ 3, to show the usefulness of the proposed scheme. Moreover, the H¨older regularity and the reproduction property are also being calculated.