For example,when five level decompositions is implemented for CDF 9 7 wavelet,compared to the known methods,the number of multiplication needed is reduced by 20% and 28% corresponds to one dimensional DWT and two dimensional DWT,respectively.

• 例如，对图像与视频压缩中应用广泛的CDF 9/7小波，做一维5级分解时与现有方法相比，乘法运算量减少20%25，而做二维5级分解时，乘法运算量可以减少28%25。