Analysis of Watermarking Systems in the Frequency Domain and Its Application to Design of Robust Watermarking Systems(Special Section on Cryptography and Information Security)

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概要

• 論文の詳細を見る

• This paper focuses oil the watermarking System using a controlled quantization process. We first present a model of the watermark embedding and extracting Processes and carry out their analyses. Then we examine the robustness of the watermarking system against common imageprocessing and clarify the reason why detection errors occur in the watermark extracting process. Based on the result, we improve the watermark extracting process and design robust watermarking systems. The improvement is accomplished using a deconvolution filter and neural network techniques. Numerical experiments using the DCT-based watermarking system show good performance as expected by us.

• 社団法人電子情報通信学会の論文
• 2002-01-01

著者

• MIYAZAKI Akio

  the Graduate School of Information Science and Electrical Engineering, Kyushu University

• Miyazaki Akio

  The Graduate School Of Information Science And Electrical Engineering Kyushu University

• Okamoto A

  The Graduate School Of Information Science And Electrical Engineering Kyushu University

• OKAMOTO Akihiro

  the Graduate School of Information Science and Electrical Engineering, Kyushu University

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• Analysis of Watermarking Systems in the Frequency Domain and Its Application to Design of Robust Watermarking Systems(Special Section on Cryptography and Information Security)

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