本文针对基于滑动时窗的小波变换中小波系数重复计算的问题,通过预先存储一部分小波系数,避免重复计算过程,以较小的存储空间为代价,获得了计算效率很高的小波变换实时算法,且小波变换实时算法获得的小波系数与多孔算法计算得到的小波系数完全相同。仿真结果表明:基于滑动时窗的小波变换实时算法快速、稳定,是一种值得推广使用的高效算法。
By putting partial wavelet coefficient in memory,we gain a fast wavelet algorithm based on sliding window technology that pays out a few storage space. Using real-time wavelet algorithm that has high computing efficiency, we can find wavelet coefficient as same as wavelet coefficient from a'trous algorithm. The simulation result shows that the fast wavelet algorithm is fast, stable and efficient, can be used widely.