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Table 1 Quality metrics for parameters evaluation on the standard NL-means state-of-the-art (σ = 10)

From: Improved preclassification non local-means (IPNLM) for filtering of grayscale images degraded with additive white Gaussian noise

Algorithm

BSD284

 

PSNR

MAE

SSIM

Time

Manjon et al. [24]

33.715

3.470

0.917

0.88

Coupe et al. [26]

29.260

7.002

0.683

0.87

Bhushan et al. [27]

29.456

6.863

0.688

1.06

Li et al. [25]

29.159

7.105

0.676

0.92

Proposed (a) for h = 1.0 × σ

33.884

3.495

0.917

1.35

Proposed (b) for h = 1.0 × σ

33.684

3.548

0.915

0.37

Proposed (a) for h = 1.2 × σ

33.771

3.578

0.912

0.90

Proposed (b) for h = 1.2 × σ

33.755

3.448

0.918

0.38

 

Cameraman

Manjon et al. [24]

35.785

2.860

0.929

1.50

Coupe et al. [26]

29.590

6.773

0.632

1.67

Bhushan et al. [27]

29.641

6.725

0.633

1.71

Li et al. [25]

29.293

6.997

0.622

1.59

Proposed (a) for h = 1.0 × σ

35.997

2.815

0.932

1.66

Proposed (b) for h = 1.0 × σ

35.721

2.999

0.921

0.62

Proposed (a) for h = 1.2 × σ

35.864

2.893

0.928

2.13

Proposed (b) for h = 1.2 × σ

35.814

2.901

0.926

0.65

 

Brain

Manjon et al. [24]

25.764

12.635

0.817

0.22

Coupe et al. [26]

25.456

12.425

0.769

0.22

Bhushan et al. [27]

25.401

12.518

0.769

0.23

Li et al. [25]

25.378

12.516

0.768

0.23

Proposed (a) for h = 1.0 × σ

25.824

12.618

0.823

0.22

Proposed (b) for h = 1.0 × σ

25.803

12.653

0.823

0.09

Proposed (a) for h = 1.2 × σ

25.796

12.602

0.819

0.22

Proposed (b) for h = 1.2 × σ

25.795

12.554

0.819

0.09