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http://dx.doi.org/10.3745/KIPSTC.2007.14-C.1.039

Reversible Watermarking Based On Advanced Histogram Shifting  

Hwang, Jin-Ha (상명대학교 디지털저작권보호연구센터)
Kim, Jong-Weon (상명대학교 디지털저작권보호연구센터)
Choi, Jong-Uk (상명대학교 소프트웨어대학)
Publication Information
The KIPS Transactions:PartC / v.14C, no.1, 2007 , pp. 39-44 More about this Journal
Abstract
In this paper, we propose a reversible watermarking method to recover an original image after the watermark has been extracted. Most watermarking algorithms cause degradation of image quality in original digital content in the process of embedding watermark. In the proposed algorithm, the original image can be obtained when the degradation is removed from the watermarked image after extracting watermark information. In the proposed method, we utilize histogram shifting concept and Location Map structure. We could solve the Filp-Flop problem by using Location Map structure and enlarge the information embedding capacity by embedding recursively. Experimental results demonstrate that the embedding information as large as 120k bits can be realized while the invisibility as high as 41dB can be maintained.
Keywords
Watermarking; Reversible; Authentication; Histogram Shifting;
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