Exposing Digital Forgeries From JPEG Ghosts

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 origina...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on information forensics and security 2009-03, Vol.4 (1), p.154-160
Main Author: Farid, H.
Format: Article
Language:English
Subjects:
Cloning
Colored noise
Compressed
Compressing
Computer information security
Digital
Digital forensics
digital tampering
Forgery
Ghosts
Head
Image coding
Image compression
Image resolution
JPEG encoders-decoders
Quantization
Rest
Terrorism
Transform coding
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1556-6013
1556-6021
DOI:10.1109/TIFS.2008.2012215