Detecting digital image forgeries through weighted local entropy

被引：0
|
作者：
Zhang, Chi [1 ]
Zhang, Hongbin [1 ]
机构：
[1] Beijing Univ Technol, Comp Inst, Beijing, Peoples R China
来源：
2007 IEEE INTERNATIONAL SYMPOSIUM ON SIGNAL PROCESSING AND INFORMATION TECHNOLOGY, VOLS 1-3 | 2007年
关键词：
digital forensics; digital tampering; weighted local entropy;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper we propose a new method that could reveal some traces that were left in the tampered digital images without using watermarking technique. Our method is based on detecting the presence of feather operation, which is particularly useful to create a smooth transition between the selected region and its surroundings. The similarity of pixel neighborhood is used as weight coefficient to modulate local entropy value. The forged region can be determined by the value of weighted local entropy precisely. Results of experiments on tampered images will be given.
引用
收藏
页码：150 / 155
页数：6
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