TY - GEN
T1 - Improved perceptual video encryption using alternative unitary transforms
AU - Yeung, Siu Kei Au
AU - Zhu, Shuyuan
AU - Zeng, Bing
PY - 2010
Y1 - 2010
N2 - It has been demonstrated in our earlier work [1] 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 [1] 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.
AB - It has been demonstrated in our earlier work [1] 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 [1] 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.
KW - Alternative unitary transforms
KW - H.264 codec
KW - Perceptual video encryption
KW - Rotation angles
UR - http://www.scopus.com/inward/record.url?scp=79851497498&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:79851497498
SN - 9780984589333
T3 - 2010 5th International ICST Conference on Communications and Networking in China, ChinaCom 2010
BT - 2010 5th International ICST Conference on Communications and Networking in China, ChinaCom 2010
T2 - 5th International ICST Conference on Communications and Networking in China, ChinaCom 2010
Y2 - 25 August 2010 through 27 August 2010
ER -