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MMSEC
2005
ACM

Exposing digital forgeries by detecting inconsistencies in lighting

10 years 4 months ago
Exposing digital forgeries by detecting inconsistencies in lighting
When creating a digital composite of, for example, two people standing side-by-side, it is often difficult to match the lighting conditions from the individual photographs. Lighting inconsistencies can therefore be a useful tool for revealing traces of digital tampering. Borrowing and extending tools from the field of computer vision, we describe how the direction of a point light source can be estimated from only a single image. We show the efficacy of this approach in real-world settings. Categories and Subject Descriptors I.4 [Image Processing]: Miscellaneous Keywords Digital Tampering, Digital Forensics
Micah K. Johnson, Hany Farid
Added 26 Jun 2010
Updated 26 Jun 2010
Type Conference
Year 2005
Where MMSEC
Authors Micah K. Johnson, Hany Farid
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