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Table 4 Numerical results of comparison with Lee’s algorithm

From: Fast colorization based image coding algorithm using multiple resolution images

Image

Algorithm

Number

Volume of

Time [sec]

PSNR [dB]

SSIM

  

of RPs

information

   
  

[pixels]

[byte]

encoding

decoding

Cb

Cr

Cb

Cr

Milkdrop

proposed algorithm

274

699

0.72

0.22

37.8741

35.8627

0.9635

0.9377

 

algorithm proposed in [12]

274

959

81.78

31.01

37.1474

32.4973

0.9432

0.9049

 

algorithm proposed in [12]

200

700

53.41

29.27

36.8288

32.4900

0.9397

0.8978

Boat

proposed algorithm

274

698

0.71

0.22

34.7794

32.0441

0.8928

0.8734

 

algorithm proposed in [12]

274

959

79.87

28.77

34.5627

32.8473

0.8815

0.8744

 

algorithm proposed in [12]

200

700

52.57

28.66

34.1386

32.5993

0.8753

0.8707

Lenna

proposed algorithm

274

701

0.71

0.21

36.1906

35.3057

0.9231

0.9018

 

algorithm proposed in [12]

274

959

80.88

29.55

36.2129

34.5499

0.9086

0.8925

 

algorithm proposed in [12]

200

700

53.39

29.51

35.9824

34.5354

0.9059

0.8903

Pepper

proposed algorithm

274

697

0.71

0.20

29.4435

30.0789

0.8697

0.8762

 

algorithm proposed in [12]

274

959

88.56

38.37

32.6670

29.7992

0.8702

0.8510

 

algorithm proposed in [12]

199

697

59.50

37.39

30.2358

28.8093

0.8458

0.8256

Airplane

proposed algorithm

274

702

0.71

0.22

33.0319

31.6955

0.9117

0.9149

 

algorithm proposed in [12]

274

959

79.14

29.15

34.9049

33.9563

0.9124

0.9185

 

algorithm proposed in [12]

200

700

52.83

29.07

34.7446

33.8131

0.9100

0.9165

Couple

proposed algorithm

274

703

0.70

0.20

38.7016

37.0570

0.9216

0.9172

 

algorithm proposed in [12]

274

959

84.51

34.82

38.4629

35.9642

0.9143

0.9013

 

algorithm proposed in [12]

201

704

56.13

32.76

38.3394

35.8256

0.9134

0.9012

Earth

proposed algorithm

274

695

0.71

0.21

39.4627

36.1058

0.9500

0.9049

 

algorithm proposed in [12]

274

959

85.51

35.81

40.2759

37.7125

0.9536

0.9166

 

algorithm proposed in [12]

199

697

58.08

35.84

40.0729

37.6271

0.9525

0.9156