Some Sub-Optimal Decoding Algorithm for Binary Data Hiding Using Linear Block Code

• Main Authors: Wei-Wen Chang, 張維文
• Other Authors: 陳後守
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/nt6qvg

碩士 === 國立中興大學 === 通訊工程研究所 === 99 === This paper proposed a method is binary data hiding using linear block code , the message embedded into binary image by syndrome code technique . At the time , we proposed two decoding algorithm , named WAE and LIAE algorithm . Both the algorithm is a sub-optimal algorithm . WAE has fast decoding speed and low complexity . WAE get num of k codeword by linear block code generator matrix , then using iterative decoding . And find a vector near coset leader which get good embedded efficiency and have property of low complexity . Further , the other part we proposed the algorithm LIAE . It have property of linear independent basis , and use the weight table to find suitable pixel for embedding . Thus the watermark in the image is difficult to detect . For reduce distortion , we will research the relation between num of linear independent basis and embedding efficient .