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摘要: 介绍了由时间轴一维与帧内二维组合而成的准三维小波变换结合运动补偿的编码器结构,并针对运动变化较缓慢的序列图像,观察实验数据特点,提出了改进零树编码与像素点编码相结合的编码策略。计算机仿真实验证明,采用该方法,可有效降低计算复杂度,提高执行效率,同时在压缩比达到400∶1时,图像恢复质量仍在29dB 以上。