Journal
PATTERN RECOGNITION
Volume 41, Issue 1, Pages 56-66Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.patcog.2007.06.005
Keywords
steganalysis; LSB matching; DENFIS; SVMRFE; image complexity
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In this paper, we present a scheme based on feature mining and pattern classification to detect LSB matching steganography in grayscale images, which is a very challenging problem in steganalysis. Five types of features are proposed. In comparison with other well-known feature sets, the set of proposed features performs the best. We compare different learning classifiers and deal with the issue of feature selection that is rarely mentioned in steganalysis. In our experiments, the combination of a dynamic evolving neural fuzzy inference system (DENFIS) with a feature selection of support vector machine recursive feature elimination (SVMRFE) achieves the best detection performance. Results also show that image complexity is an important reference to evaluation of steganalysis performance. (C) 2007 Pattern Recognition Society. Published by Elsevier Ltd. All rights reserved.
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