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Table 3 Performance of noise reduction techniques evaluated using SNR (dB)

From: Joint pre-processing framework for two-dimensional gel electrophoresis images based on nonlinear filtering, background correction and normalization techniques

Noise type

Noise reduction technique

Noise intensity (dB)

  

20

18

16

14

12

10

8

Gaussian

WT

27.60

26.69

25.63

24.30

22.83

21.15

19.31

 

GNDF

28.42

27.30

26.09

24.89

22.98

21.87

20.11

Rayleigh

WT

27.60

24.76

20.99

17.80

14.94

12.34

9.78

 

GNDF

28.40

25.69

21.77

18.47

15.52

12.89

10.50

Exponential

WT

25.08

26.62

24.73

21.48

18.27

15.39

12.71

 

GNDF

24.67

26.88

26.79

24.61

21.55

18.49

15.61

  1. The values in bold indicate the best SNR for each noise level.