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Improved Contrast for Threshold Random-grid-based Visual Cryptography.

Hao HuGang ShenZhengxin FuBin Yu
Published in: KSII Trans. Internet Inf. Syst. (2018)
Keyphrases
  • visual cryptography
  • visual cryptography scheme
  • digital images
  • secret sharing scheme
  • halftone images
  • video sequences
  • gray scale
  • black and white
  • secret image sharing