Hybrid RGSA and Support Vector Machine Framework for Three-Dimensional Magnetic Resonance Brain Tumor Classification

Table 7

Features	Formula
Run length features
Short Run Emphasis (SRE)
Long Run Emphasis (LRE)
Low Gray Level Run Emphasis (LGRE)
High Gray Level Run Emphasis (HGRE)
Short Run Low Gray Level Run Emphasis (SRLGE)
Short Run High Gray Level Run Emphasis (SRHGE)
Long Run Low Gray Level Run Emphasis (LRLGE)
Long Run High Gray Level Run Emphasis (LRHGE)
Gray Level Nonuniformity (GLNU)
Run-Level Nonuniformity (RLNU)
Run Percentage (RPC)
GLCM features
Entropy
Homogeneity
Contrast
Energy
Correlation coefficient