is 1 or -1 for a perfectly positively or
negatively correlated image. Correlation
is NaN for a constant image.
Energy Provides the sum of squared elements in
the GLCM. Also known as uniformity or
the angular second moment. Energy is 1
for a constant image
Homogeneity Measures the closeness of the distribution
of elements in the GLCM to the GLCM
diagonal. Homogeneity is 1 for a diagonal
GLCM