Figure 2: Comparison: bold solid continuous curves are generated by proposed 4point and 6point ternary approximating schemes (a) Ko et al. [7] and proposed 4point ternary schemes (b) [5, 9] and proposed 4point ternary scheme (c) Hassan and Dodgson [1] and proposed 4point ternary schemes (d) [5, 9] and proposed 6point ternary scheme (e) Khan and mustafa [6] and proposed 6point ternary schemes. 
