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- W2347645495 abstract "This paper put forward a robust spread spectrum algorithm with high safety in DWT(discrete wavelet transform)domain.Permuted watermark by Arnold transformation,then encrypted and spread based on compound chaotic binary sequence.And presented a method of fixing quantization step adaptively in DWT domain.Embedded binary watermark bits in frequency domain through odd-even quantization.The use of compound chaotic keys and privacy of modification on coefficients of DWT domain enhanced the security of watermarking algorithm.Spread spectrum watermarking technology using chaotic sequence as spread-spectrum code improved the robustness of watermark.The imperceptibility and robustness were all took into consideration commendably,and realized blind extraction of watermark." @default.
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- W2347645495 date "2010-01-01" @default.
- W2347645495 modified "2023-09-23" @default.
- W2347645495 title "Spread spectrum watermarking algorithm based on compound chaotic sequence" @default.
- W2347645495 hasPublicationYear "2010" @default.
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