期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2016
卷号：4
期号：4
页码：5342
DOI：10.15680/IJIRCCE.2016.0404253
出版社：S&S Publications
摘要：One of the best technique for the security of images or text is "Visual Cryptography".Initially, This technique was developed for black and white images but later on same was extended for color images as well.The (k,n) threshold visual cryptography scheme has been successfully described.Splitting of image into shares is the basic concept of visual cryptography technique .Shares can be meaningful or meaningless depending on the study conducted by different authors.Halftoning,color decomposition and pixel expansion are the three basic terminologies that has been used by different authorsfor the encryption of color images using visual cryptography technique.There are two basic fundamentals of colormodels.One is additive model and another is subtractive model.Color decomposition is done into R(red),G(green),B(blue) if additive model is used and C(cyan),M(magenta) and Y(yellow) if subtractive model is used.The main objective of this paper is to make comparative analysis of various visual cryptography techniques used by different authors
关键词：Visual Cryptography; Shares;Encryption;Security ;Imagequality;Number of shares;Decryption
