稳健性图像复制-粘贴篡改被动认证

Image Passive Authentication and Robust Detection of Copy-move Forgeries

图像复制-粘贴(copy-move)是一类常见的图像篡改手段,篡改者通过将图像中一部分区域复制并粘贴到同一幅图像另一区域后起到掩盖被覆盖内容的目的。由于篡改者为了使篡改更加逼真或者试图增加检测难度,往往在粘贴图像块之前对图像块进行加噪、模糊或者旋转缩放等后续处理。目前检测这类篡改的认证方法主要归纳为3类:变换域稳健特征子块匹配方法、旋转不变特征子块匹配方法和特征点匹配方法。对采用这3类方法的国内外文献进行了系统的分析和归纳并对未来研究方向进行了展望。

Image copy-move modification is a kind of common tampering manipulations. Forgers duplicate some part of an image and move to another place in the same image. In arder to make the image more realistic and attempt to increase the difficulty of monitoring,forgers always process image by adding noise, making vagne, rotating or slaling before moving the image. The copy-move detection methods can be roughly classified into three catego- ries： frequency domain based methods, rotation invariant based methods and feature-points based methods. In this paper, the typical methods and sum- marize the technological progress in copy-move detection are outlined. Some new trends are also discussed in the conclusion.