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Exposing Digital Forgeries From JPEG Ghosts

delete2009-03-01
delete338
PRE
AI
H
Hany Farid *
DOI：10.1109/TIFS.2008.2012215delete
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Abstract

Abstract

En 中文
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.
Keywords:
Digital forensics
digital tampering

Journal

IEEE Transactions on Information Forensics and Security cover
IEEE Transactions on Information Forensics and Security
IF:
8
Papers:
5.2K
Citations:
2.3W

Organization

No organization information available