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.