the alignment problem of visual cryptography schemes

	the alignment problem of visual cryptography schemes
	Liu Feng ; Wu Chuan Kun ; Lin Xi Jun
刊名	DESIGNS CODES AND CRYPTOGRAPHY
	2009
卷号	50 期号:2 页码:215-227
关键词	Visual cryptography Pixel expansion Subpixel shift
ISSN号	0925-1022
学科主题	Computer Science ; Theory & Methods; Mathematics ; Applied
WOS记录号	WOS:000262394900006
公开日期	2011-03-18
附注	Pixel expansion is an important parameter for Visual Cryptography Schemes (VCS). However, most papers in the literature are dedicated to reduce pixel expansion on the pixel level, i.e. to reduce the number of subpixels that represent a pixel in the original secret image. It is quite insufficient since the final size of the transparencies of the VCS is affected not only by the number of the subpixels, but also by the size of the subpixels in the transparencies. However, reducing the size of the subpixels in the transparencies results in difficulties of alignment of the transparencies. In this paper, we consider the alignment problem in VCS, and prove that in order to visually recover the original secret image, it is not necessary to align the transparencies precisely. This study is restricted to the case when only one transparency is shifted.
内容类型	期刊论文
源URL	[http://124.16.136.157/handle/311060/7760]
专题	软件研究所_信息安全国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	Liu Feng,Wu Chuan Kun,Lin Xi Jun. the alignment problem of visual cryptography schemes[J]. DESIGNS CODES AND CRYPTOGRAPHY,2009,50(2):215-227.
APA	Liu Feng,Wu Chuan Kun,&Lin Xi Jun.(2009).the alignment problem of visual cryptography schemes.DESIGNS CODES AND CRYPTOGRAPHY,50(2),215-227.
MLA	Liu Feng,et al."the alignment problem of visual cryptography schemes".DESIGNS CODES AND CRYPTOGRAPHY 50.2(2009):215-227.