摘要
图像拼接是伪造数字图像最基本的操作,对其的被动盲检测和定位也是数字图像取证亟待解决的关键问题之一。该文通过对图像进行颜色滤波矩阵插值,对图像进行了原图估计,重建其像素邻域一致性。利用待取证图像的边缘点在像素邻域一致性上偏离估计的原始图像的程度,对图像的拼接进行准确定位。实验表明,该方法能够有效地检测图像拼接伪造区域的位置、大小和形状。
Image splicing is the most fundamental operation of creating an image forgery,thus the detection and localization of image splicing attract increasing attention recently.In this paper,a blind and passive approach of splicing localization is proposed based on original image estimation.By color filter array interpolation,the original image of the test image is estimated and the coherence of the pixels＇ neighbor is re-constructed.Using a comparison between the test image and the estimated original one in edge pixels,the localization is implemented.Experimental results show the good performance of the proposed method.
出处
《电子与信息学报》
EI
CSCD
北大核心
2012年第1期200-206,共7页
Journal of Electronics & Information Technology
基金
国家自然科学基金(60971095)
中央高校基本科研业务费专项资金资助课题
关键词
图像处理
数字图像取证
图像拼接
颜色滤波矩阵插值
定位
Image processing
Digital image forensics
Image splicing
Color Filter Array（CFA） interpolation
Localization
