School;
of;
Electric;
and;
Electronic;
Engineering,;
North;
China;
Electric;
Power;
University,;
Beijing;
102206,;
China;
The;
Air;
Force;
Engineering;
University,;
Xi'an;
710077,;
China;
DCT域; α-稳定; 最优检测; 水印; 离散余弦变换; 高斯混合模型; 广义高斯分布; DCT系数;