Low Power Block-Based Watermarking Algorithm(Application Information Security)
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概要
- 論文の詳細を見る
In recent years, digital watermarking has become a popular technique for labeling digital images by hiding secret information which can protect the copyright. The goal of this paper is to develop a DCT-based watermarking algorithm for low power and high performance. Our energy-efficient technique focuses on reducing computation required on block-based permutation. Instead of using spacial coefficients proposed by Hsu and Wu's algorithm, we use DCT coefficients to pair blocks directly. The approach is implemented by C language and estimated power dissipation using Wattch toolset. The experimental results show that our approach not only reduces 99% energy consumption of pairing mechanism, but also increase the PSNR by 0.414db for the best case. Moreover, the proposed approach is robust to a variety of signal distortions, such as JPEG, image cropping, sharpening, blurring, and intensity adjusting.
- 社団法人電子情報通信学会の論文
- 2006-04-01
著者
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Pai Yu‐ting
National Taiwan Univ. Sci. And Technol. Taipei Twn
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Ruan Shanq‐jang
National Taiwan Univ. Of Sci. And Technol. Taipei Twn
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PAI Yu-Ting
Department of Electronic Engineering, National Taiwan University of Science and Technology
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RUAN Shanq-Jang
Department of Electronic Engineering, National Taiwan University of Science and Technology
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Pai Yu-ting
Department Of Electronic Engineering National Taiwan University Of Science And Technology
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Ruan Shanq-jang
Department Of Electronic Engineering National Taiwan University Of Science And Technology
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