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- W2357705579 abstract "The secret information is embedded in one of elements of every 8×8 Discrete Cosine Transform(DCT) coefficient matrixes of cover image,and based on DCT characteristic the stego-image is correspondingly changed according to different embedded locations,which can improve imperceptibility of Spread Spectrum(SS) algorithm.Simulation results indicate that the SS algorithm based on DCT characteristic can improve Peak Signal to Noise Ratio(PSNR) of stego-image not by reduction of embedment strength,thus avoids the problem that reduction of embedment strength enlarges retrieval errors.In order to effectively overcome the adverse effect of round error and raise accuracy rating,a fault-tolerant retrieval algorithm is proposed according to the probability density function of retrieval errors.Simulation results verify the feasibility and validity of the algorithm." @default.
- W2357705579 created "2016-06-24" @default.
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- W2357705579 date "2011-01-01" @default.
- W2357705579 modified "2023-09-26" @default.
- W2357705579 title "Image Hiding Algorithm of Robust Spread Spectrum Based on DCT Characteristic" @default.
- W2357705579 hasPublicationYear "2011" @default.
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