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Table 3 PSNR results of DCT-CNR, Chroma Blurring, and Dfine algorithms.

From: Chroma Noise Reduction in DCT Domain Using Soft-Thresholding

PSNR (dB)

Noise amount

Image

DCT CNR

CB

Dfine

DCT CNR

CB

Dfine

DCT CNR

CB

Dfine

Lena

30.53

30.49

29.76

29.88

29.91

29.85

28.98

29.05

29.28

Baboon

26.24

26.25

25.46

26.00

26.03

25.05

25.73

25.76

24.98

Fruits

31.86

31.61

31.58

30.86

30.62

30.88

29.64

29.42

29.85

Girl

32.93

31.98

32.87

31.82

31.66

32.16

30.23

29.87

30.80

Ship

35.50

35.45

35.44

33.96

34.12

34.66

32.00

32.25

33.68

Cat

30.94

30.94

29.75

30.18

30.18

30.02

29.23

29.24

28.16

Dogs

36.96

36.89

36.96

35.11

34.97

36.48

32.92

33.21

35.25

Flowers

32.30

32.08

32.04

31.40

31.20

31.81

30.35

30.14

30.87

Sea

29.98

30.04

29.90

28.98

29.06

29.07

27.95

28.04

28.08

Parrot

35.50

35.32

35.73

33.86

33.61

34.84

32.09

31.72

33.44

Average

32.27

32.11

31.95

31.21

31.14

31.48

29.91

29.87

30.44