A Data Hiding Scheme Using Modulus Coding

• Main Authors: Yu-Hsuan Chu, 朱育萱
• Other Authors: Wen-Chung Kuo
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/n59pgn

碩士 === 國立虎尾科技大學 === 資訊工程研究所 === 100 === In 2006, Zhang and Wang proposed a data hiding scheme based on the exploiting modification direction (EMD). Next year, Lee et al. proposed a data hiding method based on the EMD scheme in order to enhance the embedding capacity. Recently, Kieu and Chang proposed a steganographic scheme by fully exploiting modification directions (FEMD). The FEMD method can achieve various hiding capacities and good visual qualities. In this study, we will use modulus coding to achieve HC-EMD and FEMD under keeping the same embedding capacities. Moreover, based on the non-unique of the code table, the proposed methods can provide the security of the secret message. And we use a simple method of modular congruence to solve overflow or underflow problem. According to the experimental results, the proposed methods can achieve performances of above-mentioned.