Classification of Error-Diffused Halftone Images Based on Spectral Regression Kernel Discriminant Analysis

Table 4

The training and testing time under different sample sizes (in seconds).

		14000	15000	16000	17000	18000	19000	20000	21000	22000
	Training time	65.208	78.317	94.660	110.47	129.32	150.18	178.94	205.11	513.54
	Testing time	6.3742	6.2583	5.8530	5.5251	4.8792	4.4947	3.7872	3.0375	4.3393
	Training time	65.851	78.796	95.113	110.70	130.97	150.76	173.98	198.95	240.10
	Testing time	6.3674	6.0804	5.7496	5.503	4.9287	4.3261	3.6775	3.0353	2.9631
	Training time	65.662	79.936	95.173	110.69	130.33	150.63	174.41	198.34	239.96
	Testing time	6.5226	6.1817	5.7826	5.3778	4.8531	4.5513	3.7137	2.9735	3.0597
	Training time	68.902	82.554	99.189	115.27	135.34	156.71	179.94	204.85	288.36
	Testing time	10.200	9.8393	9.3112	8.7212	8.016	6.902	5.8556	4.9363	3.6921