A method to estimate the steganographic capacity in DCT domain based on MCUU model
| Autor: | Li-Nan Zhu, Gang Xiao, Huang Yanhong, Weiguo Sheng, Jiafa Mao, Xin-Xin Niu |
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| Rok vydání: | 2016 |
| Předmět: |
Steganalysis
Multidisciplinary Steganography Speech recognition 020206 networking & telecommunications 02 engineering and technology computer.file_format JPEG Domain (software engineering) Spread spectrum 0202 electrical engineering electronic engineering information engineering Discrete cosine transform Embedding 020201 artificial intelligence & image processing Algorithm computer Image resolution Mathematics |
| Zdroj: | Wuhan University Journal of Natural Sciences. 21:283-290 |
| ISSN: | 1993-4998 1007-1202 |
| DOI: | 10.1007/s11859-016-1172-7 |
| Popis: | In order to estimate maximum steganographic capacity of discrete cosine transform (DCT) domain in JPEG image, this paper presents a method based on the maximize capacity under undetectable model (MCUU). We analyze the relation between steganographic capacity and affecting factors (image size, steganography operator, loading band, embedding intensity and image complexity). Then we design a steganography analyzer architecture and a steganographic algorithm which can dynamically increase the steganographic capacity. Compared with other methods of embedding capacity estimation in DCT domain, the proposed methods utilizes general steganalysis methods rather than one specific steganalysis technique and takes five essential factors into account, which improves the commonality and comprehensiveness of capacity estimation, respectively. The experimental results show that steganographic capacity for quantization index modulation (QIM) is almost twice that of spread spectrum (SS) based on MCUU model. |
| Databáze: | OpenAIRE |
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