DCT域运动补偿误差或原始图像信息转换成块的系数代表的设置不同的频率成分, 它有两个优点:第一,信号1,小范围内的大部分能量集中在频域。这样的描述是几个要点的重要组成部分;第二,将频域分解过程映射到人类视觉系(The coefficients of the DCT domain motion compensation error or the original image information convert into blocks are represented by different frequency components. It has two advantages: first, signal 1, most of the energy in the small range is concentrated in the frequency domain. Such a descr iption is an important part of several key points. Second, mapping the frequency domain decomposition process to the human visual system.)