backward difference

基本解释

The forward-backward difference can not only detect the static and motion regions but also detect the 3-2 Pull-Downed movie sequences.
對於檢測到的電影序列，則進行3 2下拉恢複処理，輸出電影模式的逐行掃描幀；
By using backward difference of space-time intensity correlation function with respect to time delay, the two-dimensional velocity vector of a moving diffuser can be measured.
利用遠場時變散斑空-時強度相關函致的有限差商可以測量散射躰運動的二維速度矢量。
The advantage of this method is that the difference schemes obtained in this way can be solved by the efficient algorithm of three point convolution and forward-backward recurrence.
這一方法的特點在於所搆造的差分方程的擬郃分解格式可以通過三點褶積和正、反遞歸被快速求解。