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Table 3 The features after the process of HAFS

From: Pulmonary lesion subtypes recognition of COVID-19 from radiomics data with three-dimensional texture characterization in computed tomography images

Dimension of features

Kind of features

Characteristics

2D

First order

Length, Mean, Max, Var, ASM, Energy

3D

First order

Robust mean absolute deviation, Mean, Root mean squared, Range, Interquartile range, Skewness

Glszm

Gray-level variance, High gray-level zone emphasis, Zone percentage, Small area low gray-level emphasis

Glrlm

Long-run high gray-level emphasis, Difference variance, Gray-level nonuniformity normalized, Run percentage

Glcm

Sum squares, Id, Joint average

Gldm

Dependence nonuniformity normalized, Dependence entropy, Dependence entropy

Shape

Major axis length