Table 2: Comparison of 4-point ternary schemes.

Scheme Type Support Order

Ternary 4-point [3] Interpolating 5 3 2
Ternary 4-point [4] Interpolating 5 3 2
Ternary 4-point [4] Interpolating 5 4 1
Ternary 4-point [5, 9] Interpolating 5 3 1
Ternary 4-point [7] Approximating 5.5 4 2
Ternary 4-point [14] Approximating 5 4 3
Ternary 4-point [15] Approximating 5.5 4 2

Ternary 4-point proposed Approximating 5.5 5 4