Distortion free progressive btc based secret image sharing

Chin Chen Chang, Yi Ping Chiu, Chia Chen Lin*, Yi Hui Chen

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

2 Scopus citations


Following the development of a method by Blakley in 1979 to share secret data among participants, in 2008, Tso extended that method to transmit information while reducing the storage space and bandwidth by quantizing the secret image. Owing to its use of quantization to generate shares, the method of Tso fails to obtain a reconstructed image distortion free. In 2010, Ulutas et al. proposed a solution to obtain the reconstructed image entirely. However, their method incurs the share expansion prob-lem. Therefore, this work presents a novel method that combines the methods of Tso and Ulutas et al. to transmit a secret image with small shares and obtains the reconstructed image distortion free. The proposed scheme also provides the progressive data transmission feature.

Original languageEnglish
Pages (from-to)195-213
Number of pages19
JournalJournal of Network Intelligence
Issue number3
StatePublished - 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018, Taiwan Ubiquitous Information. All rights reserved.


  • (K, n)-threshold secret sharing
  • Block truncation coding (BTC)
  • Progressive data transmission


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