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• W2013058666 abstract "Steganalysis is used to detect hidden content in innocuous images. Many successful steganalysis algorithms use a large number of features relative to the size of the training set and suffer from a curse of dimensionality: large number of feature values relative to training data size. High dimensionality of the feature space can reduce classification accuracy, obscure important features for classification, and increase computational complexity. This paper presents a filter-type feature selection algorithm that selects reduced feature sets using the Mahalanobis distance measure, and develops classifiers from the sets. The experiment is applied to a well-known JPEG steganalyzer, and shows that using our approach, reduced-feature steganalyzers can be obtained that perform as well as the original steganalyzer. The steganalyzer is that of Pevn´y et al. (SPIE, 2007) that combines DCT-based feature values and calibrated Markov features. Five embedding algorithms are used. Our results demonstrate that as few as 10-60 features at various levels of embedding can be used to create a classifier that gives comparable results to the full suite of 274 features." @default.
• W2013058666 created "2016-06-24" @default.
• W2013058666 creator A5010268023 @default.
• W2013058666 creator A5060629144 @default.
• W2013058666 date "2010-02-04" @default.
• W2013058666 modified "2023-09-25" @default.
• W2013058666 title "Feature selection for steganalysis using the Mahalanobis distance" @default.
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• W2013058666 doi "https://doi.org/10.1117/12.841074" @default.
• W2013058666 hasPublicationYear "2010" @default.
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