AUTHORS: R. Shanthakumari, S. Malliga
Download as PDF
ABSTRACT: In this paper, a robust and efficient digital image watermarking algorithm using the Slant transform is proposed for the copyright protection of images. This algorithm can embed or hide an entire image or pattern as a watermark such as an Institution’s logo or trademark directly into the original image. In the existing method a visible/invisible watermarking process for embedding and extraction a digital watermark into/form an image is carried out in hadamard transform domain using scaling factor. It is calculated with the help of the underlying cover image. This method facilitates in preserving ownership rights of the owner. In the proposed system, an adaptive visible/invisible watermarking scheme is done to prevent the privacy and preserving copyright protection of digital data with good energy compaction using Slant transform based on the scaling factor of the image. The value of scaling factor depends on the control parameter. The control parameter can be adjusted to make the watermarking scheme as either visible or invisible. The performance of the proposed algorithm is evaluated using various attacks. Results show that this algorithm is very robust and can survive up to 60% of all attacks. These attacks were tested on a number of test images of size 512×512×8bit, embedded with a watermark image of size 256×256×8 bits. The simplicity of the slant transform also offers a significant advantage in shorter processing time and ease of implementation
KEYWORDS: Copyright Protection, Digital Watermarking, Images, Slant Transform
REFERENCES:
[1] R. G. van Schyndel, A. Z. Tirkel, and C. F. Osborne, A digital watermark, Proc. IEEE Int. Conf. Image Processing, vol. 2, 1994, pp. 86–90
[2] I. J. Cox, J. Kilian, F. T. Leighton, and T. Shamoon, Secure spread spectrum watermarking for multimedia,IEEE Trans. Image Processing, vol.6, 1997, pp. 1673–1687.
[3] C.-T. Hsu and J.-L. Wu,Hidden digital watermarks in images, IEEE Trans. Image Processing, vol. 8, 1999, pp. 58–68.
[4] E. H. Hall, Computer Image Processing and Recognition, New York: Academic Press, 1979.
[5] A. N. Akansu and R. A. Haddad, Multiresolution Signal Decomposition: Transforms, Subbands and Wavelets, Academic Press Inc., 1992.
[6] Mohanty SP, Ramakrishnan KR, Kankanhalli MS, A DCT domain visible watermarking technique for images. In: Proceedings of international conference on multimedia and expo; 2000, p.1029-32.
[7] Hu Y, Kwong S., An image fusion based visible watermarking algorithm. In: Proceedings of international symposium on circuits and systems; 2003,pp. III-794-7.
[8]. Luo Yong, Cheng Li-Zhi, Wu Yi Xu, -Hong Zhi, Translucent digital watermark base on wavelets and error-correct code. Chinese Journal of Computers ;2005,27(11):1533-9.
[9] Yang Y, Sun X, Yang H, Li CT, Xiao R.,A contrast-sensitive reversible visible image watermarking technique. IEEE Transactions on Circuits and Systems for Video Technology ; 2009,19(5):656-67.
[10] Tsai JS, Huang WB, Kuo YH, On the selection of optimal feature region set for robust digital image watermarking. IEEE Transactions on Image Processing ; 2011, 20(3):735-43.
[11] Mohanty SP, Bhargava BK, Invisible watermarking based on creation and robust insertion-extraction of image adaptive watermarks. ACM Transactions on Multimedia Computing ; 2008, 5(2):12:1-12:22.
[12] Tian L, Zheng N, Xue J, Li C, Wang X, An integrated visual saliency-based watermarking approach for synchronous image authentication and copyright protection. Signal Processing:Image Communication; 2011, 26(8):427-37.
[13] Wang C, Ni J, Huang J , An informed watermarking scheme using Hidden Markovmodel in the waveletdomain. IEEE Transactions on Information Forensics and Security;7(3): 2012,853-67.
[14] Santhi V,Arulmozhivarvarman P, ‘Hadamard transform based adaptive visible/invisible watermarking scheme for digital images’, Information Security Technical Report Vol.01,No.001, 2013.
