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

Autor:	Wei-Wen Chang, 張維文
Rok vydání:	2011
Druh dokumentu:	學位論文 ; thesis
Popis:	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 .
Databáze:	Networked Digital Library of Theses & Dissertations
Externí odkaz:	http://ndltd.ncl.edu.tw/handle/nt6qvg Zobrazit plný text záznamu