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›› 2012, Vol. ›› Issue (3): 423-428.DOI: 10.7523/j.issn.2095-6134.2012.3.021

• Research Articles • Previous Articles     Next Articles

Steganalysis of palette images based on run-length statistics and Walsh spectrum energy distribution

LI Hong-Yan1, ZHAO Xian-Feng2, HUANG Wei1, SHENG Ren-Nong3   

  1. 1. State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China;
    2. State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100195, China;
    3. Beijing Institute of Electronic Technology and Application, Beijing 100091, China
  • Received:2011-01-28 Revised:2011-02-28 Online:2012-05-15

Abstract: A new method is proposed for palette image steganalysis based on the run-length statistics and the Walsh spectrum energy distribution. The P-value binary image is constructed and then 46-dimensional features are extracted from the run-length histogram and Walsh spectrum coefficients. Calibration is utilized to eliminate varieties caused by hosts. Experiments show that our scheme can successfully detect EzStego, sum of RGB-based steganography, and OPA with low embedding rates and it is superior to some prior arts.

Key words: steganalysis, optimal parity assignment, palette images, calibration, Walsh transform

CLC Number: