General model for the priority-based progressive visual secret sharing

Young Chang Hou, Zen Yu Quan, Chih Fong Tsai

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Hou et al. [11] proposed the (n, n)-PPVSM in which every participator is assigned a unique privilege to recover the secret message. However, their schema may violate the spirits of priority and the majority decision most in some situations. In order to improve these problems, this study proposes a novel method called the general model for the priority-based progressive visual secret sharing (GPPVSS). Our study has the following advantages: (1) the number of participants in each priority level can be adjusted based on the actual situation. (2) as the number of the stacked shares or the sum of the corresponding privileges increases, the black-white contrast is risen. That is to say, this schema conforms to the principles of majority decision most and priority-based. (3) after all of transparencies are stacked, the contrast of restored images are (n-2)/(n-1), and it is better than other studies. (4) the size of transparencies is the same as the secret image.

Original languageEnglish
Pages (from-to)33-48
Number of pages16
JournalChung Cheng Ling Hsueh Pao/Journal of Chung Cheng Institute of Technology
Volume42
Issue number2
StatePublished - Nov 2013

Keywords

  • Priority (weighting) share
  • Progressive visual secret sharing
  • Visual secret sharing

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