Blind recognition technology of image tampering based on higher-order statistics biocoherent theory the research

With the rapid development and wide application of digital image processing, images become more and more easy and wide to be tampered. The abuse of tampered images often appear in domains of news and judicial and did great harm. The higher order statistics biocoherent detecting method is studied thoroughly. A large number of experiments are done. The condition and limitations of the using of this method is analyzed. The experimental results show that the accuracy of the identification has a direct bearing of the differences of the gray value on the edge.