Algorithm	Feature set	Percentage Error Rate
		tree	bush	grass	foliage	bgsky
PCA	rgb+ent	47.8	52.8	47.2	46.5	55.3
PCA	rgb+ll+ent	48.4	51.6	46.5	49.1	57.2
PCA	blue+brn	45.9	54.7	42.1	45.3	56.6
PCA	blue	--	--	--	--	54.7