A New Multiresolution Watermarking for Progressive Image Transmission Based on Scan Language

Autor:	Chao-Hui Shen, 沈朝輝
Rok vydání:	2000
Druh dokumentu:	學位論文 ; thesis
Popis:	88 This paper presents a new multiresolutin watermarking scheme for progressive image transmission based on the Scan language [3]. The mean pyramid structure is used in the proposed watermarking scheme. Employing the Scan language, the given watermark is encrypted and embedded into each level of the mean pyramid structure. A detailed security analysis from the combinatorial viewpoint is also given. Some experimentations are carried out to illustrate that the difference between the embedded image (i.e., watermarked image) and the original image is almost invisible in multiresolution sense and it leads to the protection effect. In addition, the watermark protection against the JPEG compression is investigated.
Databáze:	Networked Digital Library of Theses & Dissertations
Externí odkaz:	http://ndltd.ncl.edu.tw/handle/14227848551495644080 Zobrazit plný text záznamu