期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2019
卷号：97
期号：1
页码：109-120
出版社：Journal of Theoretical and Applied
摘要：Based on the dictionary coding technique, a new lossless compression method (CBDM) is presented to compress the color image in sufficient manner without missing any information and give a good CR. Then we use this proposed method in the sharing scheme (which presented and explained in reference [3]) to enhancing the performance of the system by combining it with other methods in compression phase into the sharing system, which suggested to share a secret image into multiple shadow pictures utilizing a method for solving a system of linear equation by Gaussian Elimination and scheme of Shamir�s threshold. This sharing system gives a shadow image size for everyone user to be as smaller as possible [1/4.6*(v/k)] of the secret image (where v=2,3,.., according to k value; the minimum number of qualified shares to reconstruct the secret), and any number of shares less than k uncovers any data about the secret image. This technique is secure for an image sharing with excellent execution time and gives fantastic (PSNR) value rate [larger than 34 dB] as shown in result table using DPCM that keep an image quality good however much as could be expected.
