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- W2359694576 abstract "A new fragile blind watermarking algorithm for integrity verification and tampering proof of image is proposed. Firstly, we divided the original image into some blocks, operated integer wavelet transform for each block once, and worked out the average of absolute value of wavelet coefficients in four sub-bands(LL,HL,LH,HH)respectively. Then we changed each average into the initial value of chaos. The watermark information was obtained by iterating of chaos and quantifying the chaos sequence. At last, we embedded the watermark information into four sub-bands randomly. Experimental results show that our algorithm improves the probability of tampering test further and has high sensitivity to image tampering. It can exactly locate the tampering part also. In addition, the watermark information can be extracted without original image, watermark image, and tampering test can be done only with the watermark image tampered." @default.
- W2359694576 created "2016-06-24" @default.
- W2359694576 creator A5006298452 @default.
- W2359694576 date "2007-01-01" @default.
- W2359694576 modified "2023-09-22" @default.
- W2359694576 title "Fragile Blind Watermarking Based on Chaos and Integer Wavelet Transform" @default.
- W2359694576 hasPublicationYear "2007" @default.
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