Table 2

AMBE, EC, saturation and second-order entropy values for the enhanced grayscale images

Image

EC

AMBE

Saturation

Entropy


Test image in Figure 4

0.0372

3.2331

HE

0.0548

0.1508

3.60

4.2073

CLAHE

0.0636

0.1311

3.54

4.1527

Proposed method

0.0537

0.1159

3.59

4.0078

imadjust

0.0474

0.0827

0.00

3.5967


Image

EC

AMBE

Saturation

Entropy


Test image in Figure 5

0.0401

3.6281

HE

0.0531

0.1327

1.52

4.2510

CLAHE

0.0698

0.0410

0.06

4.4609

Proposed method

0.0581

0.0396

0.37

4.2702

imadjust

0.0531

0.0492

1.33

4.0464


Saleem et al. EURASIP Journal on Image and Video Processing 2012 2012:10   doi:10.1186/1687-5281-2012-10

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