Analysis and design of visual secret sharing scheme for gray image

Jian LIU; Yi ZHANG; Yuling LIU; Hao HU

doi:10.11959/j.issn.2096-109x.2020049

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Analysis and design of visual secret sharing scheme for gray image

Papers | 更新时间：2024-06-03

- Analysis and design of visual secret sharing scheme for gray image
- Chinese Journal of Network and Information Security Vol. 6, Issue 4, Pages: 140-147(2020)
- 作者机构：
  
  1. 信息产业信息安全测评中心，北京 100083
  2. 中国电子科技集团公司第十五研究所，北京 100083
  3. 中国科学院信息工程研究所，北京 100190
  4. 信息工程大学，河南郑州 450001
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.2096-109x.2020049
  CLC： TP309.7
- Online First：2020-08，
  
  Published：15 August 2020
- 稿件说明：
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Jian LIU, Yi ZHANG, Yuling LIU, et al. Analysis and design of visual secret sharing scheme for gray image[J]. Chinese Journal of Network and Information Security, 2020, 6(4): 140-147.
DOI：

Jian LIU, Yi ZHANG, Yuling LIU, et al. Analysis and design of visual secret sharing scheme for gray image[J]. Chinese Journal of Network and Information Security, 2020, 6(4): 140-147. DOI： 10.11959/j.issn.2096-109x.2020049.

摘要

针对现有灰度可视秘密共享（GVSS，gray visual secret sharing）将原始图像转化为黑白二值图像进行处理时产生像素信息损失的问题，提出了一种基于灰度叠加的GVSS，对于每一个灰度级像素，分别设计相应的加密矩阵，生成灰度共享份图像，在此基础上设计了(2

2)、(2

n)、(n

n)方案。与现有方案相比，所提方案有效降低了像素扩展度并实现了灰度密图的无损恢复。

Abstract

Existing gray visual secret sharing (GVSS) convert the original image into black-white binary image for processing

which causes the pixel information loss problem.For this purpose

a kind of GVSS based on gray superposition was proposed.For each gray-scale pixel

the corresponding encoding matrix was designed to generate gray share image.On this basis

the schemes for (2

n) threshold structures were designed.Compared with the existing schemes

the proposed scheme effectively reduces pixel expansion and achieves the perfect reconstruction of gray secret images.

关键词

Keywords

references

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