MULTIBIT VERSUS MULTILEVEL EMBEDDING IN HIGH CAPACITY DIFFERENCE EXPANSION REVERSIBLE WATERMARKING

被引：0

作者：

Coltuc, Dinu ^{[1
]}

Tudoroiu, Adrian ^{[1
]}

机构：

[1] Valahia Univ Targoviste, Dept Elect Engn, Targoviste, Romania

来源：

2012 PROCEEDINGS OF THE 20TH EUROPEAN SIGNAL PROCESSING CONFERENCE (EUSIPCO) | 2012年

关键词：

Reversible watermarking; difference expansion; multilevel embedding; multibit embedding;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The classical difference expansion (DE) reversible watermarking expands two times a difference in order to embed one bit of data. The upper limit of such DE schemes in a single embedding level is usually bounded by 1 bpp. In order to obtain more than 1 bpp, several embedding stages are chained. The multibit DE schemes expand n times the difference in order to embed up to log(2) n bpp. This paper proposes a multibit extension of the difference expansion reversible watermarking and compares the results with the multilevel embedding case. The multibit reversible watermarking outperforms the multilevel one both in capacity and quality. Experimental results on standard test images are provided.

引用

页码：1791 / 1794

页数：4

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