基于拉格朗日插值多项式的彩色图像分存方案  

Color Image Sharing Method Based On Lagrange's Interpolating Polynomial

作　　者：陈桂强[1] 王丽琴[2] 李玉鉴[1] 

机构地区：[1]北京工业大学计算机学院 [2]张家口职业技术学院电气工程系,河北张家口100075

出　　处：《计算机测量与控制》2008年第7期1030-1032,共3页Computer Measurement &Control

基　　金：国家863计划资助项目(2006AA01Z440)

摘　　要：为了解决真彩色大秘密图像的安全传输问题,提出了一种基于拉格朗日插值多项式的图像分存方案;该方案通过对真彩色大秘密图像进行压缩、量化、编码、分解、译码等处理生成秘密图像的n个影子,再将每个影子隐藏于一幅尺寸是秘密图像的t分之一大小的可视的载体图像中,任取其中的t个嵌入秘密图像影子的载体图像,就能恢复原始秘密图像;同时给出了分存原理和直接恢复公式,提高了图像分存和恢复的速度,简化了计算过程。In order to solve the problem of security of transmitting the color big secret image, the secret image sharing method based on the Lagrange＇s interpolating polynomial, is proposed. The n shadow hnages of the secret image were made by compressing substituting cod ing and disassembling etc. Each shadow image is hidden in all ordinary image so as not to attract an attacker＇s attention, the size of each stego image （in which a shadow image is hidden） is about 1/t of the seerct image. Any t of the n stego images can be used to recover the original secret image. At the same time the shared princlpieand the comeback＇s expressions is brought, the speed oftheimage sharing and comeback is heightened, the process of calculate is predigested.

关 键 词：拉格朗日插值公式 秘密图像 载体图像 图像分存 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]