计算图像灰度值的均值向量和协方差矩阵,C语言编程，保证正确-cov and average

SMI算法的一些源程序，简单的指出了期望信号协方差矩阵，干扰信号协方差矩阵，噪声信号协方差矩阵。-Some of the source of the SMI algorithm, simply that the desired signal covariance matrix, the covariance matrix of an interference signal, the noise signal covariance matrix.

根据一组样本数据的均值和协方差矩阵随机产生正态分布以及对数正态分布的任意规模的样本数据。-According to a set of sample data mean and covariance matrix randomly generated normal and lognormal distribution of the sample data of any size.