Detection of perturbed quantization (PQ) steganography based on empirical matrix

Abolghasemi, M.; Aghaeinia, H.; Faez, K.

doi:10.22042/isecure.2015.2.2.5

Document Type : Research Article

Authors

https://doi.org/10.22042/isecure.2015.2.2.5

Abstract

Perturbed Quantization (PQ) steganography scheme is almost undetectable with the current steganalysis methods. We present a new steganalysis method for detection of this data hiding algorithm. We show that the PQ method distorts the dependencies of DCT coefficient values; especially changes much lower than significant bit planes. For steganalysis of PQ, we propose features extraction from the empirical matrix. The proposed features can be exploited within an empirical matrix of DCT coefficients which some most significant bit planes were deleted. We obtain four empirical matrices and fuse resulted features from these matrices which have been employed for steganalysis. This technique can detect PQ embedding on stego images with 77 percent detection accuracy on mixed embedding rates between 0.05 _ 0.4 bits per non-zero DCT AC coefficients (BPNZC). Comparing the results, we also show that the detection rates are effectively comparable with respect to current steganalysis techniques for PQ steganography.

Keywords

20.1001.1.20082045.2010.2.2.5.3

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The ISC International Journal of Information Security

Detection of perturbed quantization (PQ) steganography based on empirical matrix

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Optional file type 1

Volume 2, Issue 2 - Serial Number 2
16
July 2010
Pages 119-128

Detection of perturbed quantization (PQ) steganography based on empirical matrix

Optional file type 1

Optional file type 1

Volume 2, Issue 2 - Serial Number 216July 2010Pages 119-128

Volume 2, Issue 2 - Serial Number 2
16
July 2010
Pages 119-128