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- W2364795510 abstract "Focusing on the problem of the embedding position for digital watermarking,a new digital watermarking scheme is presented in which watermarks can be embedded in low luminance smooth blocks.The low luminance smooth blocks are selected by sorting the 8×8 disperse cosine transform(DCT) blocks according to the values of DC coefficients and the variance of AC coefficients,respectively.The watermark is embedded by shifting the phases of a subset with low-frequency coefficients and the watermark extraction can be performed according to the signs of these low-frequency coefficients' averages. Experimental results show that the watermarked images look visually identical to the original ones and that the watermarks are robust to low-pass filtering and JPEG compression,and have certain resistance to some operations such as image cropping,scaling and histogram equalizing." @default.
- W2364795510 created "2016-06-24" @default.
- W2364795510 creator A5084501664 @default.
- W2364795510 date "2008-01-01" @default.
- W2364795510 modified "2023-09-24" @default.
- W2364795510 title "Digital Watermarking Scheme with Low Luminance Smooth Blocks in Discrete Cosine Transform Domains" @default.
- W2364795510 hasPublicationYear "2008" @default.
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