کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
564530 875613 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Passive detection of doctored JPEG image via block artifact grid extraction
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
Passive detection of doctored JPEG image via block artifact grid extraction
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing - Volume 89, Issue 9, September 2009, Pages 1821–1829
نویسندگان
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