significant amplitude meaning in English

有义幅值

Motion compensated prediction error image has significant amplitudes mainly along the boundaries of moving objects , correspondingly its wavelet coefficients contain large energy in high frequency bands . this greatly reduces the coding efficiency of ezw . it is first provided that the correspondence between the significant amplitudes area of the mcp error image and the wavelet coefficient significant map , then encode the significant map efficiently using quadtree approach , followed by bit - plane coding the significant coefficients to produce an embedded data stream . experiment result shows that compared to ezw and zte , the proposed algorithm is more efficient and has better performance
算法对于运动补偿余量误差帧首先进行小波变换，并选取适当的阈值，用重要图表示大于该阈值的重要系数。根据残差帧小波系数的统计特性，用四叉树方法编码重要图，并对重要系数作位面编码，生成嵌入式码流。实验表明，与ezw ， zte等算法相比较，该算法编码效率高，复现图像质量好。