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- W939952341 abstract "Taking full advantage of the randomicity of chaotic system and its extreme sensitivity to the initial value, a new chaotic fragile watermarking algorithm is proposed. In the algorithm, the location key is looked as a logistic chaotic initial value for iteration to create a location matrix. According to this location matrix, a mapping image is generated and the embedding location of watermarking in image blocks is identified. Then, the watermarking sequence, which is related with the mapping image blocks and generated by Henon chaotic map, is embedded into the least significant bit (LSB) of the corresponding location in each block. Since the image content and watermarking are staggered, the algorithm has a higher security. Simulation results showed that the algorithm can detect and locate the tamper in watermarked images with an accuracy of 2×2 block pixels. At the same time, the watermarking images has good invisibility, and the original image is not required when extracting watermarking.更多还原" @default.
- W939952341 created "2016-06-24" @default.
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- W939952341 date "2009-01-01" @default.
- W939952341 modified "2023-09-23" @default.
- W939952341 title "Novel Chaotic Fragile Watermarking Algorithm for Image Authentication" @default.
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