TABLE 3

Effect of Iteration on Mean Squared Errors for Different Combinations of Prediction Region and Block Size

		Prediction region
		Low count level			Intermediate count level			High count level
Block size	n	3 × 3*	3 × 3	5 × 5	3 × 3*	3 × 3	5 × 5	3 × 3*	3 × 3	5 × 5
5 × 5	0	1.26	1.08	—	3.85	2.95	—	13.25	10.11	—
	1	1.05	0.97	—	3.12	2.99	—	10.47	10.62	—
	2	1.32	1.05	—	4.33	3.39	—	15.36	12.11	—
6 × 6	0	1.24	1.01	3.28	3.80	2.89	9.02	13.29	10.11	42.9
	1	1.01	0.92	3.51	3.00	2.91	26.05	10.28	10.44	40.69
	2	1.27	1.02	4.56	4.19	3.31	82.05	15.21	12.20	49.32
7 × 7	0	1.23	1.00	1.07	3.83	2.94	3.11	13.43	10.39	10.72
	1	1.00	0.91	1.00	3.00	2.97	3.26	10.35	10.50	11.29
	2	1.26	1.02	1.08	4.20	3.41	3.61	15.37	12.50	12.63
8 × 8	0	1.25	1.02	1.04	3.87	3.06	3.10	13.66	10.87	10.91
	1	1.01	0.93	0.94	3.06	3.05	3.20	10.63	10.85	11.06
	2	1.27	1.04	1.02	4.26	3.54	3.53	15.57	13.00	12.52
9 × 9	0	1.24	1.02	1.03	3.88	3.08	3.07	13.75	11.02	11.01
	1	0.99	0.91	0.96	3.04	3.02	3.14	10.67	10.69	11.02
	2	1.25	1.04	1.04	4.23	3.56	3.50	15.75	13.07	12.32
10 × 10	0	1.25	1.04	1.02	3.94	3.22	3.13	13.99	11.55	11.19
	1	1.01	0.94	0.94	3.12	3.14	3.15	11.08	11.39	10.83
	2	1.27	1.07	1.03	4.33	3.75	3.49	16.24	13.81	12.41
11 × 11	0	1.25	1.05	1.02	3.96	3.26	3.17	14.07	11.72	11.38
	1	1.00	0.94	0.96	3.12	3.14	3.16	11.15	11.36	10.90
	2	1.27	1.08	1.04	4.34	3.80	3.52	16.37	14.01	12.53
12 × 12	0	1.22	1.07	1.03	3.99	3.38	3.23	14.21	12.15	11.74
	1	1.01	0.96	0.97	3.15	3.23	3.18	11.38	11.88	11.07
	2	1.27	1.10	1.05	4.39	3.90	3.54	16.69	14.48	12.73

n = number of iterations; 3 × 3* = prediction region of 4 orthogonal neighbors of predicted pixel; — = modeling not possible because prediction region = block size.
Block sizes and other prediction regions are squares in pixels.