Image Retrieval Using the Intensity Variation Descriptor

Table 1

Effectiveness of adding RGB colour space information and using the selected direction and lateral inhibition formula.

Dataset	Performance (%)	Default setting	Without RGB colour space information	Without lateral inhibition formula	Without selected direction
					0°	45°	90°	135°
Corel-5K	Precision	66.91	65.50	66.50	66.39	66.08	66.54	66.09
	Recall	8.03	7.86	7.98	7.97	7.93	7.98	7.93
	F-measure	14.34	14.04	14.25	14.23	14.16	14.26	14.16
Corel-10K	Precision	56.88	55.66	56.43	56.41	56.03	56.43	56.04
	Recall	6.83	6.68	6.77	6.77	6.72	6.77	6.72
	F-measure	12.20	11.93	12.09	12.09	12.01	12.09	12.01