誤検出確率指定とビットパターン埋込みが可能な画像電子透かし法

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タイトル別名
  • Image Watermarking Scheme for Specifying False Positive Probability and Bit-pattern Embedding
  • ゴケンシュツ カクリツ シテイ ト ビットパターン ウメコミ ガ カノウ ナ ガゾウ デンシ スカシ ホウ

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This paper treats a discrete wavelet transform(DWT)-based image watermarking with considering the false positive probability and bit-pattern embedding. We propose an iterative embedding algorithm of watermarking signals which are K sets pseudo-random numbers generated by a secret key. In the detection, K correlations between the watermarked DWT coefficients and watermark signals are computed by using the secret key. L correlations are made available for the judgment of the watermark presence with specified false positive probability, and the other K-L correlations are corresponding to the bit-pattern signal. In the experiment, we show the detection results with specified false positive probability and the bit-pattern recovery, and the comparison of the proposed method against JPEG compression, scaling down and cropping.

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