Exposing Digital Forgeries From JPEG Ghosts

被引：281

作者：

Farid, Hany ^{[1
]}

机构：

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

来源：

IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY | 2009年 / 4卷 / 01期

关键词：

Digital forensics; digital tampering;

D O I：

10.1109/TIFS.2008.2012215

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

When creating a digital forgery, it is often necessary to combine several images, for example, when compositing one person's head onto another person's body. If these images were originally of different JPEG compression quality, then the digital composite may contain a trace of the original compression qualities. To this end, we describe a technique to detect whether the part of an image was initially compressed at a lower quality than the rest of the image. This approach is applicable to images of high and low quality as well as resolution.

引用

页码：154 / 160

页数：7

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