A REVIEW ARTICLE OF WATERMARKING
Journal: INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY (Vol.4, No. 1)Publication Date: 2013-01-01
Authors : Mandeep Kaur; Navneet Kaur; Chetan Batra;
Page : 98-101
Keywords : Image watermarking; Robustness; Security;
Abstract
In most of the digital image watermarking schemes, it becomes a common practice to address security in terms of robustness, which is basically a norm in cryptography. Such consideration in developing and evaluation of a watermarking scheme may severely affect the performance and render the scheme ultimately unusable. Watermarking is the process of embedding watermark into an image such that the embedded watermark can be extracted later. Lossy compression attacks in digital watermarking are one of the major issues in digital watermarking. Cheddad et al. proposed a robust secured self-embedding method which is resistant to a certain amount of JPEG compression. Our experimental results show that the self-embedding method is resistant to JPEG compression attacks and not resistant to other lossy compression attacks such as Block Truncation Coding (BTC) and Singular Value Decomposition (SVD). Therefore we improved Cheddad at all’s. Method to give better protection against BTC and SVD compression attacks
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