该函数用于计算不规则几何图形的分形特征：Hurst指数。其中input为一个N行3列的矩阵，s为度量步长，可以取1，2，3，4等。输出output就是Hurst指数-This function is used to calculate the irregular geometry of the fractal characteristics: Hurst index. Output of output is the Hurst index of