摘要
秘密共享对保护图像信息具有重要的意义。针对使用矩阵乘法运算实现图像秘密共享的方案存在图像失真及复杂度较高的问题,提出一种基于循环移位的图像秘密共享方案。本方案首先将图像像素向右移动1位,然后根据像素在图像的所在位置对剩下的7位进行循环移位。论文所提方案通过对图像像素的有效位进行循环移位,重构后的图像损失仅仅是最低位,并且不需要在图像秘密共享前进行置乱处理,所生成的影子图像也只是原秘密图像的。试验结果表明:与传统图像秘密共享方案比较,该项研究所提方法具有图像质量高和复杂度低的优点。
Secret sharing has important significance for the protection of image information.For the problem of image distortion and high complexity in image secret sharing scheme calculated with matrix multiplication,a image secret sharing scheme based on cyclic shift was proposed.The image pixels were firstly moved a single bit to the right,then according to the location of the pixel in the image,the remaining seven bits were realized cyclic shift.Through cyclic shift of significant bit of the image pixels,the loss of the reconstructing image is only the least significant digit,and with no need for scrambling before image secret sharing,the generated shadow image is only 1/t of the original secret image.Compared with the traditional image secret sharing scheme,the results show that the proposed method has advantages of high quality image and low complexity.
出处
《河北联合大学学报（自然科学版）》
CAS
2016年第1期60-66,共7页
Journal of Hebei Polytechnic University:Social Science Edition
基金
安徽省高等学校省级自然科学研究项目(KJ2011B033
KJ2012B078
KJ2012Z209)
关键词
循环移位
免置乱
矩阵乘法
可压缩图像共享
cyclic shift
avoid scrambling
matrix multiplication
compressible image sharing
