Improved perceptual video encryption using alternative unitary transforms

Siu-Kei Au Yeung; Shuyuan Zhu; Bing Zeng

5th International ICST Conference on Communications and Networking in China

Research Article

Improved perceptual video encryption using alternative unitary transforms

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Cite: BibTeX Plain Text

@INPROCEEDINGS{10.4108/chinacom.2010.58,
    author={Siu-Kei Au Yeung and Shuyuan Zhu and Bing Zeng},
    title={Improved perceptual video encryption using alternative unitary transforms},
    proceedings={5th International ICST Conference on Communications and Networking in China},
    publisher={IEEE},
    proceedings_a={CHINACOM},
    year={2011},
    month={1},
    keywords={perceptual video encryption alternative unitary transforms rotation angles H.264 codec},
    doi={10.4108/chinacom.2010.58}
}

Siu-Kei Au Yeung
Shuyuan Zhu
Bing Zeng
Year: 2011
Improved perceptual video encryption using alternative unitary transforms
CHINACOM
ICST
DOI: 10.4108/chinacom.2010.58

Siu-Kei Au Yeung¹^,*, Shuyuan Zhu¹^,*, Bing Zeng¹^,*

1: Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong, China

*Contact email: jeffay@ust.hk, eezhshy@ust.hk, eezeng@ust.hk

Abstract

It has been demonstrated in our earlier work that perceptual video encryption can be effectively achieved by using alternative unitary transforms. In this paper, we extent our work by studying the importance of selecting rotation angles to be used to generate the alternative transforms. We show theoretically and experimentally that by selecting a set of rotation angles properly, the resulted perceptual encryption system will be operating without affecting the coding efficiency, but with a higher encrypting capability. In additional, our earlier algorithm can also be further simplified with the new set of rotation angles. Both objective and perceptive evaluation will be performed with the standard H.264 codec.

Keywords: perceptual video encryption alternative unitary transforms rotation angles H.264 codec

Published: 2011-01-10
Publisher: IEEE

: http://dx.doi.org/10.4108/chinacom.2010.58