Multi-Threshold Image Secret Sharing Scheme

LI Peng; MA Pei-jun; SU Xiao-hong; LIU Feng

doi:10.3969/j.issn.0372-2112.2012.03.018

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Multi-Threshold Image Secret Sharing Scheme

更新时间：2025-07-16

- Multi-Threshold Image Secret Sharing Scheme
- Acta Electronica Sinica Vol. 40, Issue 3, Pages: 518-524(2012)
- 作者机构：
  
  1. 哈尔滨工业大学计算机科学与技术学院,黑龙江,哈尔滨,150001
  2. 中科院信息工程研究所信息安全国家重点实验室,北京,100190
  3. 哈尔滨工业大学计算机科学与技术学院黑龙江哈尔滨,150001
  4. 中科院信息工程研究所信息安全国家重点实验室北京,100190
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0372-2112.2012.03.018
  CLC： TP309
- Published：2012
- 稿件说明：
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LI Peng, MA Pei-jun, SU Xiao-hong, et al. Multi-Threshold Image Secret Sharing Scheme[J]. Acta Electronica Sinica, 2012, 40(3): 518-524.
DOI：

LI Peng, MA Pei-jun, SU Xiao-hong, et al. Multi-Threshold Image Secret Sharing Scheme[J]. Acta Electronica Sinica, 2012, 40(3): 518-524. DOI： 10.3969/j.issn.0372-2112.2012.03.018.

摘要

针对传统的基于视觉密码的图像秘密共享方案存在像素扩张导致其只能共享小尺寸的秘密图像、信息隐藏效率较低的问题

提出一种能够提高信息隐藏容量的(

)多重门限图像秘密共享方案.该方案利用秘密图像信息控制视觉密码方案中共享矩阵的选取

从而实现秘密图像在视觉密码方案中的隐藏.在秘密图像恢复的第一阶段

任意

个参与者直接叠加其影子图像后可以视觉解密出低质量的秘密图像信息;在第二阶段

任意

个参与者可以从影子图像中提取出隐藏的信息

并通过计算恢复出精确的灰度秘密图像.相对于传统的视觉密码方案

本文方案在不影响视觉密码恢复图像的视觉质量前提下

可以隐藏更多的秘密图像信息

而像素扩张尺寸较小.

Abstract

From the point of view of information hiding

traditional visual cryptography scheme (VCS) is not an efficient method.It can only share a small sized secret image due to the large pixel expansion.A (

) multi-threshold image secret sharing scheme is proposed to increase the amount of hidden information.A grayscale secret image is hidden in a VCS to guide the choice of share matrices.In the first phase of the reconstruction process

any

participants can stack their shadow images to decode a vague secret image by human visual system.In the second phase

any

participants can extract additional information hidden in their shadow images

and reveal a precise grayscale secret image by computation.Comp

ared with the traditional VCS

the proposed scheme can hide more information of the grayscale secret image

and has smaller size expansion without deteriorating the visual quality of the revealed image of VCS.

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