利用matlab针对图像进行马氏距离计算 ,分析了该信号的时域、频域、倒谱，循环谱等,一种流形学习算法（很好用）。- Using matlab to calculate the Mahalanobis distance for the image, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. A fluid manifold learning algorithm (go