Ranking of manipulated images in a large set using Error Level - - PowerPoint PPT Presentation
12-02-12 Ranking of manipulated images in a large set using Error Level Analysis Daan Wagenaar & Jeffrey Bosma University of Amsterdam In cooperation with the Netherlands Forensic Institute Ranking of manipulated images in a large set
12-02-12
12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
Original image ELA @75% ELA @ 85% ELA @ 95%
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
Manipulated image ELA @75% ELA @ 85% ELA @ 95%
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
20 50 100 150 200 250 300
Rank
20 40 60 80 100
Manipulated images found (%)
Method 3 (Colored pixels ratio) Method 4 (Highest luminance value of the brightest pixel) Method 5 (Average luminance value of the 64 brightest pixels) Method 6 (Average luminance value of the brightest block)
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
50 100 150 200 250 300
Rank
20 40 60 80 100
Manipulated images found (%)
Method 3 (Colored pixels ratio) Method 4 (Highest luminance value of the brightest pixel) Method 5 (Average luminance value of the 64 brightest pixels) Method 6 (Average luminance value of the brightest block)
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
50 100 150 200 250 300
Rank
20 40 60 80 100
Manipulated images found (%)
Method 3 (Colored pixels ratio) Method 4 (Highest luminance value of the brightest pixel) Method 5 (Average luminance value of the 64 brightest pixels) Method 6 (Average luminance value of the brightest block)
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
Manipulated image ELA @75% ELA @ 85% ELA @ 95%
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
Manipulated image ELA @75% ELA @ 85% ELA @ 95%
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
Manipulated image ELA @75% ELA @ 85% ELA @ 95%
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
Original image ELA @75% ELA @ 85% ELA @ 95%
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
ELA @75% ELA @ 85% ELA @ 95% Manipulated image
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12-02-12 Ranking of manipulated images in a large set using Error Level Analysis
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Ranking of manipulated images in a large set using Error Level Analysis 12-02-12