cooc_feature_matrix — Calculate gray value features from a co-occurrence matrix.
The operator calculates from a co-occurence matrix (CoocMatrix) the energy (Energy), correlation (Correlation), local homogeneity (Homogeneity) and contrast (Contrast).
The operator cooc_feature_matrix calculates the gray value features from the part of the input matrix generated by gen_cooc_matrix corresponding to the direction matrix indicated by the parameters LdGray and Direction according to the following formulae:
The region of the input image is disregarded.
Homogeneity of the gray values.
Correlation of gray values.
Local homogeneity of gray values.
Gray value contrast.
The operator cooc_feature_matrix returns the value 2 (H_MSG_TRUE) if an image with defined gray values is passed and the parameters are correct. The behavior in case of empty input (no input images available) is set via the operator set_system(::'no_object_result',<Result>:). If necessary an exception is raised.
intensity, min_max_gray, entropy_gray, select_gray