Research On Zero Watermarking Algorithm Based On Quick Response 2-dimensional Code

In order to solve digital watermarking technology only storing a small amount of information,single encryption,complicated authentication such as a series of problems,proposed a QR 2-dimensional Code and digital watermarking technology combined algorithm,which takes advantage of the QR 2-dimensional Code storing large amount of information,easy identification authentication,easy encryption coding,easy error correction and the hidden strong of digital watermarking advantage.The combination of QR 2-dimensional Code and the zero watermarking solves small watermarking information storage,complicated authentication such as a series of problems.First,fully study the 2-dimensional Code structure and coding rules,select the appropriate version and data information according to the flow of the 2-dimensional code rules compiled for 2-dimensional Code watermarking;then the carrier image set chaos,singular value decomposition and feature matrix extraction;then generate public graph and private graph according to the algorithm.Finally,deposit the private graph and 2-dimensional Code watermarking to certification center,in the latter used to identify the right reserved in certification center.Simulation results show that the 2-dimensional Code watermarking has good comprehensive performance,compared with the same kind of zero watermarking,steady improvement in robustness and accommodate the data information more and to achieve cheaper authentication.