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Table 2 Quantitative assessment of parameters on the overall performance

From: Using weighted dynamic range for histogram equalization to improve the image contrast

Figures 8 and9

n

α

λ

γ

AMBE

DE

EME

(a)

The original image

-

3.7277

7.5317

(c)

2

0.85

1

10

0.0288

3.6578

10.8647

(b)

1

0.85

1

10

0.0334

3.6770

15.3762

(d)

3

0.85

1

10

0.0380

3.7005

9.2426

(e)

2

0.5

1

10

0.0048

3.6734

10.6417

(f)

2

1

1

10

0.0308

3.6470

10.9212

(g)

2

0.85

5

10

0.1201

3.6892

8.6789

(h)

2

0.85

10

10

0.0960

3.7042

8.1405

(i)

2

0.85

1

1

0.0167

3.6409

11.1318

(j)

2

0.85

1

100

0.0479

3.7049

10.1021