Hybrid distortion function for JPEG steganography

Zichi Wang; Xinpeng Zhang; Zhaoxia Yin

doi:10.1117/1.JEI.25.5.050501

6 September 2016 Hybrid distortion function for JPEG steganography

Zichi Wang, Xinpeng Zhang, Zhaoxia Yin

Author Affiliations +

Journal of Electronic Imaging, Vol. 25, Issue 5, 050501 (September 2016). https://doi.org/10.1117/1.JEI.25.5.050501

Abstract

A hybrid distortion function for JPEG steganography exploiting block fluctuation and quantization steps is proposed. To resist multidomain steganalysis, both spatial domain and discrete cosine transformation (DCT) domain are involved in the proposed distortion function. In spatial domain, a distortion value is allotted for each 8×8 block according to block fluctuation. In DCT domain, quantization steps are employed to allot distortion values for DCT coefficients in a block. The two elements, block distortion and quantization steps, are combined together to measure the embedding risk. By employing the syndrome trellis coding to embed secret data, the embedding changes are constrained in complex regions, where modifications are hard to be detected. When compared to current state-of-the-art steganographic methods for JPEG images, the proposed method presents less detectable artifacts.

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Zichi Wang, Xinpeng Zhang, and Zhaoxia Yin "Hybrid distortion function for JPEG steganography," Journal of Electronic Imaging 25(5), 050501 (6 September 2016). https://doi.org/10.1117/1.JEI.25.5.050501

Published: 6 September 2016

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