Reseach On Digital Image Watermarking Network Application System Based On Database

With the advancement of Internet technology, more and more digital images are used in the network, and the forms of image representation are more and more diverse, which has effectively promoted the communication and sharing of information in the network. However, with the massive growth in the number of digital images, protection of related image copyright information has become increasingly important. Therefore, how to effectively deal with marked copyright information, and meanwhile ensure the integrity of the original image file has become a significant research direction in digital image watermark technology. In this context, the design task of the system in this thesis is to develop processing management system of Internet–based digital image watermarking technology. This system is mainly to process visible watermarks and invisible watermarks in batches.The thesis presents the concept and research status of the digital watermarking technology, analysis several common watermarking algorithms in current digital watermarking technology, and, designs the system with the implementation of two visible and invisible watermarking add method. This system uses the Microsoft Visual Studio 2005 platform, which combined with the database technology and based on the C# language. The main work is as follows.① In order to save the user registration information and the watermarking image information, this system designs the underlying database system based on Microsoft SQL Server 2008 R2 enterprise edition.② Based on Y component of color image, this system designs and implements a visible watermarking the adding methods, and realizes the bulk upload of images with the use of Web front-end programming technique The, carries out circular watermarking processing after the acquisition of treatment end traversal.③ Implements a invisible watermarking based on DCT transform adding methods, using intermediate frequency coefficient as embedding coefficient, using binary sequence image as watermark image, and realizes the digital watermarking adding by modifying the intermediate frequency coefficient④ Three layer architecture is constructed based on the MVC web application system design the batch operations of watermarking adding, realizes the dynamic batch uploading and the related watermarking processing operations.Finally, aimed at the system, classified testing and verification are conducted. Experimental results show that the system can achieve batch processing of image visible watermarking and invisible watermarking, which meets the design requirements of the system. The thesis ends up with summarizing and analyzing the development and design of this system as well as the prospect of the system.