Feature Selection for Object-Based Classification of High-Resolution Remote Sensing Images Based on the Combination of a Genetic Algorithm and Tabu Search

Table 4

Number of features and CPU time.

	GATS	GA	TS	ReliefF
WorldView-2
Feature number	45	123	107	86
Mean fitness	12.09	6.25	8.97	—
CPU time (seconds)	31.92	5.90	27	1.93
Std fitness	0.79	0.96	1.09	—
Std CPU time	2.45	1.35	1.96	0.21
QuickBird
Feature number	67	130	113	99
Mean fitness	17.93	11.63	13.52	—
CPU time (seconds)	37.14	16	32.83	2.37
Std fitness	1.14	1.46	1.63	—
Std CPU time	2.79	1.52	2.46	0.36