A Blind Watermarking Algorithm Research Based on Fast DCT

Si Yu Lai; Juan Wang

doi:10.4028/www.scientific.net/AMR.756-759.3740

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Traceroute-Based Route Gathering and Repairing Mechanism of Client-Independent IP Geolocation System
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 756-759A Blind Watermarking Algorithm Research Based on...

A Blind Watermarking Algorithm Research Based on Fast DCT

Abstract:

This article exploits a fast algorithm to watermark implant and extract, which first transform N×N(N=2ⁿ) two dimension DCT into one dimension DCT with N numbers of points. And then the adopted algorithm implants watermark using matrix decomposition and masterly adjusting interrelation of DCT coefficients, thus to make the visual distortion to be minima after a watermark being implanted in the image, in addition, this method is a blind approach. The results indicate that the algorithm enjoy high image reducing property and robustness to several common attacks when ensuring invisibility of watermark. Finally, it is also superior to R-C, index-mapping like matrix cut algorithms and can also improve calculating speed, which make it possible to apply for image protection.

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Periodical:

Advanced Materials Research (Volumes 756-759)

Pages:

3740-3743

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.756-759.3740

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Online since:

September 2013

Authors:

Si Yu Lai, Juan Wang

Keywords:

2D-DCT, Copyright Protection, DCT Modulus, Fast DCT

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