Based on the SIFT digital image blind detection algorithms

In image area replication-transformation-mobile-paste manipulation,establishes the tamper with the model,is proposed based on SIFT mark image feature vector of the blind identification algorithm,can effectively detect and positioning after rotation,scaling transformation of tamper with the area,but also can resist gaussian blur,gaussian white noise and JPEG compression heavy post-processing.And based on the traditional SIFT feature vector detection algorithm,this algorithm to tamper with the regional scale transformation has higher robustness.