TABLE 2

Texture Type and Associated Features

TypeFeatureScale
Features based on intensity histogramMinimum intensityGlobal
Maximum intensity
Mean intensity
Variance
SD
Skewness
Kurtosis
Features based on voxel-alignment matrix (M2)Short run emphasisRegional
Long run emphasis
Intensity variability
Run-length variability
Run percentage
Low-intensity run emphasis
High-intensity run emphasis
Low-intensity short-run emphasis
High-intensity short-run emphasis
Low-intensity long-run emphasis
High-intensity long-run emphasis
Features based on intensity–size–zone matrix (M4)Short-zone emphasisRegional
Large-zone emphasis
Intensity variability
Size-zone variability
Zone percentage
Low-intensity zone emphasis
High-intensity zone emphasis
Low-intensity short-zone emphasis
High-intensity short-zone emphasis
Low-intensity large-zone emphasis
High-intensity large-zone emphasis
Features based on cooccurrence matrices (M1)Second angular momentLocal
Contrast (inertia)
Entropy
Correlation
Homogeneity
Dissimilarity
Features based on neighborhood intensity-difference matrix (M3)CoarsenessLocal
Contrast
Busyness