Watermarking Schemes Using the Addition Property among DCT Coefficients

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概要

• 論文の詳細を見る

• Generally, a signal embedded in the low frequency domain is not affected seriously by attacks, but blocking effects which can be perceived easily may be occurred among adjoining blocks. In order to prevent the blocking effects, a watermark is embedded using the addition property among two-dimensional DCT basic matrices. For the addition property, a watermark is able to extracted not from the embedded block directly, but from the sub-block located in the central region of the block. Considering the distortions caused by the geometric transformations, we recover the synchronization loss before the extraction process. The robustness can also be improved by error-correction.

• 一般社団法人電子情報通信学会の論文
• 2002-03-01

著者

• TANAKA Hatsukazu

  Department of Electrical and Electronics Engineering, Faculty of Engineering, Kobe University

• Tanaka Hatsukazu

  Department Of Electical And Electronics Engineering Faculty Of Engineering Kobe University

• Tanaka Hatsukazu

  Department Of Electrical And Electronics Engineering Faculty Of Engineering Kobe University

• KURIBAYASHI Minoru

  Division of Information and Media Science, Graduate School of Science and Technology, Kobe Universit

• Kuribayashi Minoru

  Division Of Information And Media Science Graduate School Of Science And Technology Kobe University

• Kuribayashi Minoru

  Faculty Of Engineering Kobe University

• Kuribayashi Minoru

  Department Of Electrical & Electronics Engineering Faculty Of Engineering Kobe University

• Kuribayashi Minoru

  Dept. Of Electrical And Electronics Engineering Faculty Of Engineering Kobe University

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