Z2Z4-ADDITIVE PERFECT CODES IN STEGANOGRAPHY

被引：20
|
作者：
Rifa-Pous, Helena [1 ]
Rifa, Josep [2 ]
Ronquillo, Lorena [2 ]
机构：
[1] Univ Oberta Catalunya, Dept Comp Sci & Multimedia, Barcelona 08018, Spain
[2] Univ Autonoma Barcelona, Dept Informat & Commun Engn, Bellaterra 08193, Spain
来源：
ADVANCES IN MATHEMATICS OF COMMUNICATIONS | 2011年 / 5卷 / 03期
关键词：
Steganography; Z(2)Z(4)-additive perfect codes;
D O I：
10.3934/amc.2011.5.425
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
Steganography is an information hiding application which aims to hide secret data imperceptibly into a cover object. In this paper, we describe a novel coding method based on Z(2)Z(4)-additive codes in which data is embedded by distorting each cover symbol by one unit at most (+/- 1-steganography). This method is optimal and solves the problem encountered by the most efficient methods known today, concerning the treatment of boundary values. The performance of this new technique is compared with that of the mentioned methods and with the well-known rate-distortion upper bound to conclude that a higher payload can be obtained for a given distortion by using the proposed method
引用
收藏
页码：425 / 433
页数：9
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