Positivity Preserving Interpolation Using Rational Bicubic Spline

Table 7

RMSE estimation.

Method		Data sets
	Example 6	Example 7	Example 8	Example 9
Abbas et al. [1]	0.3900	0.0252	0.0011	0.0103
Ours	0.3947	0.0233	0.0012	0.0106