IEEE Trans Image Process - Joint compression/watermarking scheme using majority-parity guidance and halftoning-based block truncation coding.

Tópicos

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{ imag(2675) segment(2577) method(1081) }
{ method(2212) result(1239) propos(1039) }
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Resumo

In this paper, a watermarking scheme, called majority-parity-guided error-diffused block truncation coding (MPG-EDBTC), is proposed to achieve high image quality and embedding capacity. EDBTC exploits the error diffusion to effectively reduce blocking effect and false contour which inherently exhibit in traditional BTC. In addition, the coding efficiency is significantly improved by replacing high and low means evaluation with extreme values substitution. The proposed MPG-EDBTC embeds a watermark simultaneously during compression by evaluating the parity value in a predefined parity-check region (PCR). As documented in the experimental results, the proposed scheme can provide good robustness, image quality, and processing efficiency. Finally, the proposed MPG-EDBTC is extended to embed multiple watermarks and achieves excellent image quality, robustness, and capacity. Nowadays, most multimedia is compressed before it is stored. It is more appropriate to embed information such as watermarks during compression. The proposed method has been proved to solve effectively the inherent problems in traditional BTC, and provide excellent performance in watermark embedding.

Resumo Limpo

paper watermark scheme call majorityparityguid errordiffus block truncat code mpgedbtc propos achiev high imag qualiti embed capac edbtc exploit error diffus effect reduc block effect fals contour inher exhibit tradit btc addit code effici signific improv replac high low mean evalu extrem valu substitut propos mpgedbtc emb watermark simultan compress evalu pariti valu predefin paritycheck region pcr document experiment result propos scheme can provid good robust imag qualiti process effici final propos mpgedbtc extend emb multipl watermark achiev excel imag qualiti robust capac nowaday multimedia compress store appropri emb inform watermark compress propos method prove solv effect inher problem tradit btc provid excel perform watermark embed

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