Classification and Retrieval of Multimedia Book Cloud Resources Based upon Hash Algorithm

Table 3

Comparison of selection effects of different image features.

	500	1000	1500	2000	2500
Color characteristics	58.11%	60.35%	61.67%	65.28%	71.46%
Texture feature	51.31%	55.47%	59.84%	62.35%	68.93%
Spatial characteristics	61.35%	65.29%	71.4%	76.37%	79.61%