说明：  利用opencv对矩阵进行的运算操作等，可以产生服从均匀分布的随机矩阵，也可以产生服从正态分布的随机矩阵，有矩阵乘法，加法，除法等，非常方便，可以直接拿来用的。
(Using opencv on computing matrix operations, etc., can produce uniformly distributed random matrix, can also produce a normal distribution of random matrices, a matrix multiplication, addition, division, etc., very convenient, can be directly used.)