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.
LI Hong-Yan
,
ZHAO Xian-Feng
,
HUANG Wei
,
SHENG Ren-Nong
. Steganalysis of palette images based on run-length statistics and Walsh spectrum energy distribution[J]. Journal of University of Chinese Academy of Sciences, 2012
, (3)
: 423
-428
.
DOI: 10.7523/j.issn.2095-6134.2012.3.021
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