Table 1.

Texture features extracted.

Method	Textural Features	Number of Features
GLCM	Energy, Contrast, Correlation, Variance, Homogeneity, Sum average, Sum variance, Sum entropy, Entropy, Difference variance, Difference entropy, First information measure of correlation (FIMC), Second information measure of correlation (SIMC)	13
GLRLM	Short Run Emphasis (SRE), Long Run Emphasis (LRE), Grey-level Non-uniformity (GLN), Run-Length Non-uniformity (RLN), Run Percentage (RP), Low Grey-level Run Emphasis (LGRE), High Grey-level Run Emphasis (HGRE), Short Run Low Grey-level Emphasis (SRLGE), Short Run High Grey-level Emphasis (SRHGE), Long Run Low Grey-level Emphasis (LRLGE), Long Run High Grey-level Emphasis (LRHGE)	11
LBP	LBP histogram bins: LBP₁, LBP₂, LBP₃, …, LBP₃₆	40
LBP	LBP image statistics: LBP_Median, LBP_Variance, LBP_Skewness, LBP_Kurtosis	40
WSF	Mean_OI, SD_OI (OI: Original image)	26
	Mean_LL_i, Mean_LH_i, Mean_HL_i and Mean_HH_i, for i = 1, 2, 3
	SD_LL_i, SD_LH_i, SD_HL_i and SD_HH_i, for i = 1, 2, 3
WCF	Energy_LL₁, Contrast_LL₁, Correlation_LL₁, Homogeneity_LL₁, Entropy_LL₁, Variance_LL₁	24
	Energy_LH₁, Contrast_LH₁, Correlation_LH₁, Homogeneity_LH₁, Entropy_LH₁, Variance_LH₁
	Energy_HL₁, Contrast_HL₁, Correlation_HL₁, Homogeneity_HL₁, Entropy_HL₁, Variance_HL₁
	Energy_HH₁, Contrast_HH₁, Correlation_HH₁, Homogeneity_HH₁, Entropy_HH₁, Variance_HH₁