Journal of Shanghai University(Natural Science Edition) ›› 2013, Vol. 19 ›› Issue (3): 254-258.doi: 10.3969/j.issn.1007-2861.2013.03.008

• Communication and Information Engineering • Previous Articles     Next Articles

Reversible Data Hiding Based on Reorder and Histogram Shifting in Palette Images

REN Hui, LI Feng-yong, ZHANG Xin-peng, YU Jiang   

  1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China
  • Received:2012-09-28 Online:2013-06-30 Published:2013-06-30

Abstract: This paper proposes a novel reversible data hiding method for palette images based on the characteristics of the palette image and its histogram. The 256 palette colors are reordered to make colors of neighboring indices close. Then the pixel color indices, which are based on the maximum and the minimum
points of the color index histogram of the image are used to embed data. The reordering improves visual quality and embedding capacity. Experimental results and performance comparison with other reversible data hiding scheme for palette images are presented. It can embed more data than many of the existing reversible data hiding algorithms, and overcomes their limitations.

Key words: histogram shifiting, palette image, reorder, reversible data hiding

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