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Table 1 Subjective test results when 200 test images (100 screenshots and 100 nonscreenshots) were given

From: Screenshot identification by analysis of directional inequality of interlaced video

observer number

1

2

3

4

5

6

7

8

# Correct screenshots

41

64

37

34

35

56

33

58

# Correct nonscreenshots

65

41

64

69

69

57

68

49

Accuracy

53%

52.5%

50.5%

51.5%

52%

56.5%

50.5%

53.5%