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- W2392408464 abstract "Robustness is one of the important requirements of digital watermarking.To improve robustness,CDMA (Code Division Multiple Access) technologies have been introduced into digital watermarking.However,most existing CDMA-based watermarking parameters are usually determined via experience.With the side-information embedding scheme,we have analyzed the relationship between PSNR,embedding strength,orthogonal codes length,and number of users,in the case of CDMA additive embedding.The expression for estimating the embedding strength is derived in terms of PSNR.Experimental results show the estimating is effective.Furthermore,while keeping the PSNR constant,the relationship between spread code length and watermark bit error rate is analyzed.As a conclusion,when keeping the length of watermark bits and PSNR constant,the choice of orthogonal spreading code does not influence watermark bit error rate.The conclusion can be used to guide the actual watermarking system to choose the correct embedding parameters." @default.
- W2392408464 created "2016-06-24" @default.
- W2392408464 creator A5062946632 @default.
- W2392408464 date "2006-01-01" @default.
- W2392408464 modified "2023-09-25" @default.
- W2392408464 title "Performance Analysis of CDMA-Based Watermarking Channel with Side-Information Embedding" @default.
- W2392408464 hasPublicationYear "2006" @default.
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