Table 2: Alpha, EME and CEME values of alpha-rooting method on "crane.jpg".

Image EME CEME
Original Image - 28.7627
2-D Grayscale Image (2 × 2 model) 27.4693 -
2-D Grayscale Image (2 × 2 model) - After Alpha-Rooting (alpha = 0.88) 43.0167 -
RGB Color image - After Alpha-Rooting (alpha = 0.88) of 2-D Grayscale Image (2 × 2 model) - 46.2691
2-D Grayscale Image (2 × 3 model) 27.8003
2-D Grayscale Image (2 × 3 model) - After Alpha-Rooting (alpha = 0.88) 44.3429
RGB Color image - After Alpha-Rooting (alpha = 0.88) of 2-D Grayscale Image (2 × 3 model) 46.5222
2-D Grayscale Image (row model) 27.6265
2-D Grayscale Image (row model) - After Alpha-Rooting (alpha = 0.88) 43.0678
RGB Color image - After Alpha-Rooting (alpha = 0.88) of 2-D Grayscale Image (row model) 46.3382
2-D Grayscale Image (column model) 27.6164
2-D Grayscale Image (column model) - After Alpha-Rooting (alpha = 0.88) 42.9896
RGB Color image - After Alpha-Rooting (alpha = 0.88) of 2-D Grayscale Image (column model) 46.3066