关键词: 零树编码, 可伸缩性, 视频加密, 小波变换

Abstract: According to the security of the scalable video stream, an integrated video compression-encryption scheme is proposed. The scheme adopts a wavelet-tree scrambling algorithm to guarantee the security of the video. Furthermore, a multiple levels encryption is proposed to satisfy different consumers’ requirement. It is proved that this scheme kept the scalability of the encoding, had high security, and had small impact on compression efficiency, so it is suitable for real-time video transferring on the network.

Key words: zero-tree coding, scalability, video encryption, wavelet transform