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Journal of Electronic Imaging

Hybrid distortion function for JPEG steganography
Author(s): Zichi Wang; Xinpeng Zhang; Zhaoxia Yin
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Paper 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.

Paper Details

Date Published: 6 September 2016
PDF: 4 pages
J. Electron. Imag. 25(5) 050501 doi: 10.1117/1.JEI.25.5.050501
Published in: Journal of Electronic Imaging Volume 25, Issue 5
Show Author Affiliations
Zichi Wang, Shanghai Univ. (China)
Xinpeng Zhang, Shanghai Univ. (China)
Zhaoxia Yin, Shanghai Univ. (China)
Anhui Univ. (China)

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