Secret image sharing

Chih Ching Thien, Chih-Ching Lin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

610 Scopus citations


In this paper, we propose a method such that a secret image is shared by n shadow images, and any r shadow images (r≤n) of them can be used to restore the whole secret image. The size of each shadow image is smaller than the secret image in our method. This property gives the benefit in further process of the shadow images, such as storage, transmission, or image hiding.

Original languageEnglish
Pages (from-to)765-770
Number of pages6
JournalComputers and Graphics (Pergamon)
Issue number5
StatePublished - 1 Oct 2002


  • Gray value range
  • Lossless reveal
  • Secret sharing
  • Shadow images

Cite this