Digital photomontage's blind detection technology

With the development of digital image processing, the abuse of tampered images often appear in domains of news and judicial and did great harm. This paper analyzes the usual photomontage detecting methods, such as higher order statistics analysis, camera response function analysis, direct torgue control (DCT) coefficient analysis and etc. All the methods' applicable condition and limits have been discussed. This paper also gives the prospect of this domain's research.