Table 3 AMBE, EC, saturation and second-order entropy values for the enhanced colour images

Test image in Figure 10

0.0242

0.32452

3.2331

HE

0.0384

0.1023

0.0778

3.9383

CLAHE

0.0486

0.1090

0.0000

4.0788

Proposed method

0.0260

0.0517

0.0000

3,2474

imadjust

0.0281

0.0852

0.0305

3.4606

Image

EC

AMBE

Saturation

Entropy

Test image in Figure 11

0.0160

2.9197

HE

0.0256

0.1278

0.9750

3.6043

CLAHE

0.0350

0.1006

0.0000

3.5406

Proposed method

0.0260

0.0521

0.0005

3.5406

imadjust

0.0184

0.0920

0.5335

3,1218