Research On Digital Image Watermarking Algorithm Based On 2D Barcode

Digital watermarking, the technology of embedding special information into multimedia data, is a topic that has gained increasing attention all over the world recently. In general, the watermark of digital image, audio, video, and other media products has been proposed for resolving copyright ownership and verifying the integrity of content.On the digital image watermarking technology which is the basis of digital watermarking, the researchers propose a variety of algorithms. At present general practice is to embed watermarks into the images'wavelet transform domain, and to combine characteristics of human vision system to optimize the algorithm.Based on the widely study of the theory of digital watermarking, we introduce an algorithm of digital watermarking based on encoding and 2D barcode in this paper. We use the 2D barcode as the watermarking information and realize the pro-process of the watermarking information through encoding and forming it according to the specific arrangement. On the watermarking strategy, 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. Matlab7.1 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 encoding the 2D barcode image'matrix. The merits of this method are simple, having a good speed, easy to realize.2.Improve the internal relevancy of the watermarking image through arranging the disorder image'matrix according to the specific order. So this algorithm has good robustness to cut etc. geometry attacks.3.In this paper, we realize fixed threshold watermarking detection , conquers the disadvantage that in some watermarking detection algorithms there are no fixed thresholds, and should make certain of them though repeat experiments.