A Novel Steganography Technique for SDTV-H.264/AVC Encoded Video

Autor: Christian Di Laura, Diego Pajuelo, Guillermo Kemper
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: International Journal of Digital Multimedia Broadcasting, Vol 2016 (2016)
Druh dokumentu: article
ISSN: 1687-7578
1687-7586
DOI: 10.1155/2016/6950592
Popis: Today, eavesdropping is becoming a common issue in the rapidly growing digital network and has foreseen the need for secret communication channels embedded in digital media. In this paper, a novel steganography technique designed for Standard Definition Digital Television (SDTV) H.264/AVC encoded video sequences is presented. The algorithm introduced here makes use of the compression properties of the Context Adaptive Variable Length Coding (CAVLC) entropy encoder to achieve a low complexity and real-time inserting method. The chosen scheme hides the private message directly in the H.264/AVC bit stream by modifying the AC frequency quantized residual luminance coefficients of intrapredicted I-frames. In order to avoid error propagation in adjacent blocks, an interlaced embedding strategy is applied. Likewise, the steganography technique proposed allows self-detection of the hidden message at the target destination. The code source was implemented by mixing MATLAB 2010 b and Java development environments. Finally, experimental results have been assessed through objective and subjective quality measures and reveal that less visible artifacts are produced with the technique proposed by reaching PSNR values above 40.0 dB and an embedding bit rate average per secret communication channel of 425 bits/sec. This exemplifies that steganography is affordable in digital television.
Databáze: Directory of Open Access Journals
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