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Table 2 List of texture features extracted by MaZda software

From: Texture analysis of MR images to identify the differentiated degree in hepatocellular carcinoma: a retrospective study

Main features

More detailed features

Grey-level histogram

Mean, variance, skewness, kurtosis, percentiles (1, 10, 50, 90, 99%)

Grey-level co-occurrence matrix (GLCOM)

Angular second moment, contrast, correlation, entropy, sum entropy, sum of squares, sum average, sum variance, inverse difference moment, difference entropy, difference variance (for four directions and five interpixel distances (offsets; n = 1–5))

Grey-level run-length matrix (GLRLM)

Run-length non-uniformity, grey-level non-uniformity, long run emphasis, short run emphasis, fraction of image in runs (for four angles)

Wavelet transform

Energies of wavelet transform coefficients in sub-bands LL, LH, HL, HH