Reversible Data Embedding Scheme Using Relationships between Pixel-Values and Their Neighbors  

作　　者：Chia-Chen Lin Chin-Chen Chang Yi-Hui Chen 

机构地区：[1]Department of Computer Science and Information Management, Providence University, Taichuang [2]Department of Information Engineering and Computer Science, Feng Chia University, Taichuang [3]Department of Applied Informatics and Multimedia, Asia University, Taichung

出　　处：《Journal of Electronic Science and Technology》2012年第3期238-249,共12页电子科技学刊（英文版）

基　　金：supported by the National Science Council Foundation under Grant No.NSC 98-2410-H-126-007-MY3

摘　　要：Reversible data embedding is becoming a very important issue in securing images transmitted over the Internet, especially in dealing with sensitive images such as those created for military data and medical data. Based on the relationships between pixels and their neighbors, we propose a reversible data embedding scheme to embed hidden messages into an original image. In our proposed scheme, a two-layer data embedding approach is used for our proposed data embedding phase. Layer-1 embedding is used to hide secret data. Layer-2 embedding, which is an embedding variant of the proposed layer-1 embedding, is used to hide side information, such as the parameters required to restore the marked image. In our layer-1 embedding, the value of an embedded pixel is determined according to a predetermined threshold and the relationship between the pixel and its neighbors. In our layer-2 embedding, the similar data embedding concept is expanded to the block-based. Experimental results provide supportive data to show that the proposed scheme can provide greater hiding capacity while preserving the image quality of a marked image in comparison with previous work.Reversible data embedding is becoming a very important issue in securing images transmitted over the Internet, especially in dealing with sensitive images such as those created for military data and medical data. Based on the relationships between pixels and their neighbors, we propose a reversible data embedding scheme to embed hidden messages into an original image. In our proposed scheme, a two-layer data embedding approach is used for our proposed data embedding phase. Layer-1 embedding is used to hide secret data. Layer-2 embedding, which is an embedding variant of the proposed layer-1 embedding, is used to hide side information, such as the parameters required to restore the marked image. In our layer-1 embedding, the value of an embedded pixel is determined according to a predetermined threshold and the relationship between the pixel and its neighbors. In our layer-2 embedding, the similar data embedding concept is expanded to the block-based. Experimental results provide supportive data to show that the proposed scheme can provide greater hiding capacity while preserving the image quality of a marked image in comparison with previous work.

关 键 词：Cover image marked image reversible data embedding watermarking. 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]