根据两类训练集样本分别计算协方差矩阵作为产生矩阵进行K-L变换，与一般的整体产生的产生矩阵进行K-L变换只是存在向量上的平移-According to two kinds of training set samples separately calculated covariance matrix as produced by k-l transform matrix, and the whole of general produced by k-l matrix transformation of vector is existing translation