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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%