Passive detection of doctored JPEG image via block artifact grid extraction

Weihai Li; Yuan Yuan; Nenghai Yu

doi:10.1016/j.sigpro.2009.03.025

Passive detection of doctored JPEG image via block artifact grid extraction

Weihai Li^*, Yuan Yuan, Nenghai Yu

^*Corresponding author for this work

Computer Science Research Group

Research output: Contribution to journal › Article › peer-review

Abstract

It has been noticed that the block artifact grids (BAG), caused by the blocking processing during JPEG compression, are usually mismatched when interpolating or concealing objects by copy-paste operations. In this paper, the BAGs are extracted blindly with a new extraction algorithm, and then abnormal BAGs can be detected with a marking procedure. Then the phenomenon of grid mismatch or grid blank can be taken as a trail of such forensics. Experimental results show that our method can mark these trails efficiently.

Original language	English
Pages (from-to)	1821-1829
Number of pages	9
Journal	Signal processing
Volume	89
Issue number	9
Early online date	1 Apr 2009
DOIs	https://doi.org/10.1016/j.sigpro.2009.03.025
Publication status	Published - Sept 2009

Keywords

block artifact grid
doctored image forensic
grid mismatch
JPEG compression

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10.1016/j.sigpro.2009.03.025

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title = "Passive detection of doctored JPEG image via block artifact grid extraction",

abstract = "It has been noticed that the block artifact grids (BAG), caused by the blocking processing during JPEG compression, are usually mismatched when interpolating or concealing objects by copy-paste operations. In this paper, the BAGs are extracted blindly with a new extraction algorithm, and then abnormal BAGs can be detected with a marking procedure. Then the phenomenon of grid mismatch or grid blank can be taken as a trail of such forensics. Experimental results show that our method can mark these trails efficiently.",

keywords = "block artifact grid, doctored image forensic, grid mismatch, JPEG compression",

author = "Weihai Li and Yuan Yuan and Nenghai Yu",

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AU - Li, Weihai

AU - Yuan, Yuan

AU - Yu, Nenghai

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N2 - It has been noticed that the block artifact grids (BAG), caused by the blocking processing during JPEG compression, are usually mismatched when interpolating or concealing objects by copy-paste operations. In this paper, the BAGs are extracted blindly with a new extraction algorithm, and then abnormal BAGs can be detected with a marking procedure. Then the phenomenon of grid mismatch or grid blank can be taken as a trail of such forensics. Experimental results show that our method can mark these trails efficiently.

AB - It has been noticed that the block artifact grids (BAG), caused by the blocking processing during JPEG compression, are usually mismatched when interpolating or concealing objects by copy-paste operations. In this paper, the BAGs are extracted blindly with a new extraction algorithm, and then abnormal BAGs can be detected with a marking procedure. Then the phenomenon of grid mismatch or grid blank can be taken as a trail of such forensics. Experimental results show that our method can mark these trails efficiently.

KW - block artifact grid

KW - doctored image forensic

KW - grid mismatch

KW - JPEG compression

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DO - 10.1016/j.sigpro.2009.03.025

M3 - Article

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SP - 1821

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JO - Signal processing

JF - Signal processing

IS - 9

ER -

Passive detection of doctored JPEG image via block artifact grid extraction

Abstract

Keywords

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