5th International ICST Conference on Communications and Networking in China

Research Article

Improved perceptual video encryption using alternative unitary transforms

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  • @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.