Progressive Iterative Approximation for Extended B-Spline Interpolation Surfaces

Table 1

Spectral radii of PIA’s iteration matrices with different in Examples 1–4.

Example
	Example 1	0.8400	0.8000	0.7714	0.7500	0.7500	0.6875	0.6875	0.6429	0.6094
Example 2	0.9518	0.9232	0.9028	0.8875	0.8777	0.8209	0.8209	0.7733	0.7376
Example 3	0.9599	0.9332	0.9142	0.8999	0.8888	0.8332	0.8332	0.7856	0.7499
Example 4	0.9600	0.9333	0.9142	0.9000	0.8888	0.8333	0.8333	0.7857	0.7500