A better detection of 2LSB steganography via standard deviation of the extended pairs of values

Omed Khalind; Benjamin Aziz

doi:10.1117/12.2184496

21 May 2015 A better detection of 2LSB steganography via standard deviation of the extended pairs of values

Omed Khalind, Benjamin Aziz

Proceedings Volume 9497, Mobile Multimedia/Image Processing, Security, and Applications 2015; 94970E (2015) https://doi.org/10.1117/12.2184496
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, MD, United States

Abstract

This paper proposes a modification to the Extended Pairs of Values (EPoV) method of 2LSB steganalysis in digital still images. In EPoV, the detection and the estimation of the hidden message length were performed in two separate processes as it considered the automated detection. However, the new proposed method uses the standard deviation of the EPoV to measure the amount of distortion in the stego image made by the embedding process using 2LSB replacement, which is directly proportional with the embedding rate. It is shown that it can accurately estimate the length of the hidden message and outperform the other methods of the targeted 2LSB steganalysis in the literature. The proposed method is also more consistent with the steganalysis methods in the literature by giving the amount of difference to the expected clean image. According to the experimental results, based on analysing 3000 nevercompressed images, the proposed method is more accurate than the current targeted 2LSB steganalysis methods for low embedding rates.

Citation Download Citation

Omed Khalind and Benjamin Aziz "A better detection of 2LSB steganography via standard deviation of the extended pairs of values", Proc. SPIE 9497, Mobile Multimedia/Image Processing, Security, and Applications 2015, 94970E (21 May 2015); https://doi.org/10.1117/12.2184496

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KEYWORDS

Steganography

Steganalysis

Image processing

Digital watermarking

Image analysis

Binary data

Distortion

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