Exposing digital forgeries in complex lighting environments

被引：246

作者：

Johnson, Micah K. ^{[1
]}

Farid, Hany ^{[1
]}

机构：

[1] Dartmouth Coll, Dept Comp Sci, Hanover, NH 03755 USA

来源：

IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY | 2007年 / 2卷 / 03期

关键词：

digital forensics; digital tampering;

D O I：

10.1109/TIFS.2007.903848

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 [计算机软件与理论];

摘要：

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.

引用

页码：450 / 461

页数：12

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