Passive detection of copy-paste forgery between JPEG images  

作　　者：李香花 赵于前 廖苗 F.Y.Shih Y.Q.Shi 

机构地区：[1]School of Civil Engineering,Central South University [2]School of Geosciences and Info-Physics,Central South University [3]Computing Sciences,New Jersey Institute of Technology,Newark NJ 07102,USA [4]Electrical and Computer Engineering,New Jersey Institute of Technology,Newark NJ 07102,USA

出　　处：《Journal of Central South University》2012年第10期2839-2851,共13页中南大学学报（英文版）

基　　金：Project(61172184) supported by the National Natural Science Foundation of China;Project(200902482) supported by China Postdoctoral Science Foundation Specially Funded Project;Project(12JJ6062) supported by the Natural Science Foundation of Hunan Province,China

摘　　要：A blind digital image forensic method for detecting copy-paste forgery between JPEG images was proposed.Two copy-paste tampering scenarios were introduced at first:the tampered image was saved in an uncompressed format or in a JPEG compressed format.Then the proposed detection method was analyzed and simulated for all the cases of the two tampering scenarios.The tampered region is detected by computing the averaged sum of absolute difference(ASAD) images between the examined image and a resaved JPEG compressed image at different quality factors.The experimental results show the advantages of the proposed method:capability of detecting small and/or multiple tampered regions,simple computation,and hence fast speed in processing.A blind digital image forensic method for detecting copy-paste forgery between JPEG images was proposed, Two copy-paste tampering scenarios were introduced at first： the tampered image was saved in an uncompressed format or in a JPEG compressed format. Then the proposed detection method was analyzed and simulated for all the cases of the two tampering scenarios, The tampered region is detected by computing the averaged sum of absolute difference （ASAD） images between the examined image and a resaved JPEG compressed image at different quality factors. The experimental results show the advantages of the proposed method： capability of detecting small and/or multiple tampered regions, simple computation, and hence fast speed in processing.

关 键 词：image forensic JPEG compression copy-paste tbrgery passive detection tampered image compressed image 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]