A Hybrid SVD-DCT Watermarking Method Used for Halftone Image

Abstract:

In this letter, a digital watermarking method which combines the singular value decomposition (SVD) and the discrete cosine transform (DCT) is presented. First of all, The Arnold scrambling and the DCT are performed on the watermark and the original image, respectively. The SVD transform is performed on the image when scrambled watermark is embedded, then the watermarked image is formed. Finally, we extract watermark from the image which is handled by halftone screens. The experimental results show that this method can achieve the highest possible robustness without losing the transparency. Also it can anti printing and scanning. All the processes do not require any additional equipment. It will bring new hope to the field of anti-counterfeiting printing with singular value decomposition is applied to the half-tone image area.

• Periodical: Applied Mechanics and Materials (Volumes 644-650)
• Pages: 4473-4476
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.644-650.4473
• Online since: September 2014
• Authors: Qian Guo, Guang Xue Chen*, Jian Luo, Qi Feng Chen, Zheng Guo He
• Keywords: Anti Printing, Arnold Scrambling, Discrete Cosine Transform, Halftone Image, Scanning, Singular Value Decomposition

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