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- W2363990103 abstract "A semi-fragile image watermarking technique that accepts JPEG lossy compression was developed.With the high sensitivity on initial value of chaotic mapping and the invariant properties of DCT coefficients before and after JPEG compressions,the pre-quantified low DCT coefficients and a watermarking key are combined as the initial value of logistic maps for generating the watermark.The watermarked image was obtained by modifying the DCT coefficients according to the watermark.The number of the image blocks are mapped into the iteration times of chaotic system to resist the counterfeiting attacks on block-wise independent watermarking shemes.Experimental results showed the proposed technique was robust against JPEG lossy compression,but sensitive to the malicious attacks on the watermarked image.At meantime,it can localize the tampers correctly and accurately." @default.
- W2363990103 created "2016-06-24" @default.
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- W2363990103 date "2007-01-01" @default.
- W2363990103 modified "2023-09-22" @default.
- W2363990103 title "Semi-fragile watermarking technique based on JPEG invariant and chaotic maps" @default.
- W2363990103 hasPublicationYear "2007" @default.
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