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Table 3 Level 2 sub-band coefficient distribution after DWT and difference operation with T= 4

From: Enhanced state selection Markov model for image splicing detection

T = 4

      Horizontal difference (%)

      Vertical difference (%)

Sub-band

In range T

Out of range T

Ratio of zero

In range T

Out of range T

Ratio of zero

H1

77.4

22.6

29.2

75.1

24.9

28.6

V1

75.3

24.7

27.3

77.5

22.5

28.1

D1

89.1

10.9

45.2

90.2

9.8

46.5

H2

51.7

48.3

17.4

50.3

49.7

13.2

V2

49.5

50.5

12.1

49.6

50.4

11.5

D2

60.1

39.9

13.5

60.3

39.7

17.4