Steganalysis of halftone image using inverse halftoning

Authors:
Jun Cheng;Alex C. Kot
Affiliations:
Centre for Information Security, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore;Centre for Information Security, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore
Venue:
Signal Processing
Year:
2009

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Abstract

An inverse halftoning based steganalysis method of halftone images is proposed. In this method, the wavelet statistic features extracted from the reconstructed gray level image through the inverse halftoning of a given halftone image are used in our support vector machines classifier. Different inverse halftoning techniques are investigated including filtering based methods and projection based methods in reconstructing the gray level image. Filtering based and projection based detectors are then proposed and the performance of the steganalysis is compared based on these two detectors.