%0 Journal Article
%T The Analysis and Detection of Double JPEG Compression<br>JPEG二次压缩的分析与检测
%A DAI Meng
%A LIN Jia-jun
%A MAO Jia-fa
%A <br>戴蒙
%A 林家骏
%A 毛家发
%J 中国图象图形学报
%D 2006
%I 
%X After JPEG double compressed,the DCT statistic of JPEG image will be changed,which is the focus in this paper.The distributions of DCT coefficients are changed with the double compression factors: Q_1 and Q_2.The difference of the distributions is analyzed in this paper.A new method-dithering pattern is proposed to detect double JPEG compression.Meanwhile,the necessary and sufficient conditions about dithering pattern are obtained.Experimental results show that this method is effective.
%K JPEG double compressing
%K quality factor
%K dithering pattern<br>JPEG双压缩
%K 质量因子
%K 抖动模式
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=82B1021F9972E8B5&yid=37904DC365DD7266&vid=708DD6B15D2464E8&iid=708DD6B15D2464E8&sid=266729317CF80522&eid=498BA6789EF40614&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=2&reference_num=5