Based On Combination Of Scrambling And Integration Of Digital Watermarking Technology

With the development of computer technology and network technology promotion, information hiding technology in covert communications and computer network forensics are playing an increasingly important role in digital watermarking as an important branch of information hiding technology, is a broad prospect.Paper first introduces the basic characteristics of digital watermarking, the principle and the current status of research at home and abroad, given the theoretical model of digital watermarking, and are classified, but also describes the course of development of wavelet analysis, wavelet basic definition, multi-resolution analysis in image processing applications, focusing on the two-dimensional discrete wavelet decomposition and reconstruction algorithm and its still-image decomposition and reconstruction implementation. Because of this article watermark watermark scrambling algorithm is considered the pre-processing, it also introduced based on chaos theory image scrambling algorithm, and carried out to achieve.This article by reviewing digital watermarking and image scrambling algorithm theoretical knowledge, and an overview of the basic concepts of digital image watermarking and principles. On human visual characteristics and features of the image itself to be analyzed, based on wavelet transform of image scrambling and integration of digital watermarking algorithm.The algorithm uses the first through the chaotic LOGISTIC mapping pairs with the embedded watermark image scrambling encryption, thus ensuring the safety and secrecy of the watermark image, followed by the use of wavelet watermark image, respectively, and with embedded watermark image wavelet transform to extract two pictures of the high - frequency coefficients and low-frequency coefficients, using the improved image fusion approach to integration of the two images together in order to achieve digital watermark embedding.