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Multimedia Tools and Applications

, Volume 75, Issue 14, pp 8657–8674 | Cite as

Threshold progressive visual cryptography construction with unexpanded shares

  • Xuehu YanEmail author
  • Shen WangEmail author
  • Xiamu Niu
Article

Abstract

Differently from traditional secret sharing, progressive secret sharing can gain clearer recovered secret image with more shares. However, previous progressive visual secret sharing (PVSS) schemes with unexpanded shares are only for case (2, n) other than general threshold (case), which will restrict the application range. In this paper, a general threshold PVSS construction method from case (2, n) with unexpanded shares is proposed. It has the feature of (k, n) threshold with no pixel expansion, which could be loss-tolerant and control access for a wider application. Based on the proposed construction method, a new threshold PVSS scheme is constructed. Compared with relative approaches, the proposed scheme has improved performances.

Keywords

Visual secret sharing Progressive visual cryptography Progressive visual secret sharing Threshold Pixel expansion Quality-adaptive 

Notes

Acknowledgement

The authors would like to thank the anonymous reviewers for their valuable discussions and comments. This work is supported by the National Natural Science Foundation of China (Grant Number: 61100187, 61301099, 61361166006).

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Electronic Engineering InstituteHefeiChina
  2. 2.School of Computer Science and TechnologyHarbin Institute of TechnologyHarbinChina

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