Exposing digital forgeries in complex lighting environments

doi:10.1109/TIFS.2007.903848

Exposing digital forgeries in complex lighting environments

2007-09-01

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DOI：10.1109/TIFS.2007.903848

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The availability of sophisticated digital imaging technology has given rise to digital forgeries that are increasing in sophistication and frequency. We describe a technique for exposing such fakes by detecting inconsistencies in lighting. We show how to approximate complex lighting environments with a low-dimensional model and, further, how to estimate the model's parameters from a single image. Inconsistencies in the lighting model are then used as evidence of tampering.

Keywords:

digital forensics

digital tampering

Exposing digital forgeries in complex lighting environments

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