Table 3.

Correlations of the LDW measurements with the low-level image features

Features	Correlation coefficient	Features	Correlation coefficient
RGB_R_Homogeneity	−0.652^a	LAB_B_Energy	−0.652^a
RGB_G_Energy	−0.651^a	YCrCb_Cr_Energy	−0.651^a
HSV_H_Energy	−0.653^a	YCrCb_Cb_Energy	−0.652^a
HSV_S_Energy	−0.650^a	HSI_S_Std	0.661^a
HSV_S_Homogeneity	−0.657^a	HSI_S_Energy	−0.653^a
LAB_L_Energy	−0.655^a	Area	0.8831^a
HSI_S_Homogeneity	−0.661^a

^aCorrelation is significant at the 0.01 level