Data Embedding Method for Disclosing Betrayers in Collusion Attack

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  • 結託攻撃の参加者を特定可能とする情報埋め込み法
  • ケッタク コウゲキ ノ サンカシャ オ トクテイ カノウ ト スル ジョウホウ ウメ コミ ホウ

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There has been proposed a data embedding method based on the phase modulation of the two-dimensional sampling lattice to image coding in which the smooth control to the tradeoff between the reliability of embedded information and the quality of decoded image can be attained. In this paper, the effect of the simplest collusion attack with this method, based on the use of the arithmetic mean of pixel values by betrayers is examined. The results show that the method can disclose who they are.

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