A multilayer steganography method with high embedding efficiency for palette images

Han Yan Wu*, Ling Hwei Chen, Yu Tai Ching

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Embedding efficiency is an important issue in steganography methods. Matrix embedding (1, n, h) steganography was proposed by Crandall to achieve high embedding efficiency for palette images. This paper proposes a steganography method based on multilayer matrix embedding for palette images. First, a parity assignment is provided to increase the image quality. Then, a multilayer matrix embedding (k, 1, n, h) is presented to achieve high embedding efficiency and capacity. Without modifying the color palette, hk secret bits can be embedded into n pixels by changing at most k pixels. Under the same capacity, the embedding efficiency of the proposed method is compared with that of pixel-based steganography methods. The comparison indicates that the proposed method has higher embedding efficiency than pixel-based steganography methods. The experimental results also suggest that the proposed method provides higher image quality than some existing methods under the same embedding efficiency nd capacity.

Original languageEnglish
Pages (from-to)1608-1617
Number of pages10
JournalIEICE Transactions on Information and Systems
VolumeE103D
Issue number7
DOIs
StatePublished - 1 Jul 2020

Keywords

  • Embedding efficiency
  • Multilayer matrix embedding
  • Palette images
  • Parity assignment

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