Research On Digital Image's Robustness Watermarking Algorithm Based On QR Barcode

With the Internet and multi-media of the development widely available day by day, the copyright of the number product of protects problem is more and more out-standing! The watermarking technique is a kind of main means of copyright protection, and got a quickly development, had become the main heat one of science research .The robustness is one of the key problem that studies digital watermarking in its application, the research aiming at robustness of the watermarking is the main heat of currently digital watermarking technique research to order, currently, the researchers have put forward various different algorithm to this. It mainly imbeds the watermarking to the cover image's transformation domain, and to combine HVS(mankind visual system characteristic) to raise the robustness of algorithm.Based on the information hiding and the widely study of the theory of digital watermarking, we introduce the new algorithm of digital watermarking based on QR barcode in this paper. The one uses the QR barcode as the watermarking information and ash degree image as the cover image. First, it utilizes chaotic sequence to generate a key which encrypts the watermarking information, then carries on Interleaving ,blocks and encoding, finally we realize the pro-process of the watermarking information according to the specific arrangement. we use discrete wavelet transform, combining the human eye visual characteristic, embed the watermarking in the low frequency domain of the cover image's DWT result. The other uses also the QR barcode as the watermarking information but embed in color picture, it is mainly to carry on intertexture coding, cent piece coding and so on. it is imbedding, and withdrawing procession looks alike with the first, artificial experiment indicates that this method has a better robustness and invisibility.The innovative contributions are presented as follows:(1)Realize disorder of watermarking image through chaotic encrypting and encoding the QR barcode image'matrix. The merits of this method are simple, strong confidentiality, easy to realize.(2)Improve anti-paroxysm interference and the internal relevancy of the watermarking image through intertexture coding and arranging the disorder image's matrix according to the specific order. So this algorithm has good robustness to RST...