By Frank Y. Shih
This ebook intends to supply a entire review on diversified points of mechanisms and strategies for info safeguard. it really is written for college kids, researchers, and execs learning within the box of multimedia defense and steganography. Multimedia defense and steganography is mainly correct end result of the international scale of electronic multimedia and the fast progress of the net. electronic watermarking expertise can be utilized to assure authenticity and will be utilized as evidence that the content material has no longer been altered in view that insertion. up to date concepts and advances in watermarking are explored during this new version. The combinational spatial and frequency domain names watermarking approach presents a brand new notion of enlarging the embedding capability of watermarks. The genetic set of rules (GA) established watermarking method solves the rounding blunders challenge and supply an effective embedding procedure. every one bankruptcy offers the reader with a primary, theoretical framework, whereas constructing the wide complicated suggestions and contemplating the fundamental ideas of the electronic watermarking and steganographic platforms. numerous powerful algorithms which are provided all through illustrate the framework and supply information and instruments in figuring out and imposing the elemental principles.
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Extra info for Digital Watermarking and Steganography: Fundamentals and Techniques
It can also be used for tracing images that have been illegally distributed. There are two major steps in the digital watermarking process: (1) watermark embedding , in which a watermark is inserted into a host image, and (2) watermark extraction , in which the watermark is pulled out of the image. Because there are a great number of watermarking algorithms being developed, it is important to define some criteria for classifying them in order to understand how different schemes can be applied. 2 presents classification based on applications.
Information Hiding , New York: Springer, 2000. , Digital Watermarking for Digital Media , Hershey, PA: Idea Group, 2005. Shih, F. , Multimedia Security: Watermarking, Steganography, and Forensics, Boca Raton, FL: CRC Press, 2013. , Digital Watermarking Explained , New York: John Wiley, 2003. , San Francisco: Morgan Kaufmann, 2002. 2 Classification in Digital Watermarking With the rapidly increasing number of electronic commerce Web sites and applications, intellectual property protection is an extremely important concern for content owners who exhibit digital representations of photographs, books, manuscripts, and original artwork on the Internet.
9,4), the chaotic values are in the range of (0,1). 14) l + 1 y 1 1 where det = 1 or − 1 , and l and N denote an integer and the width of a l l + 1 square image, respectively. 14. 8a to an image of size 101 × 101, which contains a short horizontal line. 8b– e. We observe that the neighboring pixels are now scattered everywhere around the image. 2 lists the coordinate change of each pixel using the chaotic map. 9a shows a Lena image of size 101 × 101. 14 with l = 2. Note that the resulting image is exactly the same as the original image after 17 iterations.