中文说明：代码里有很完整的注释和解释，music高阶谱分析算法，包括调制，解调，信噪比计算，在MATLAB中求图像纹理特征，基于分段非线性权重值的Pso算法，包括AHP，因子分析，回归分析，聚类分析。
English Description：
Very complete the comment in the code and explain music high-order spectral analysis algorithms, including modulation, demodulation and signal to noise ratio, image texture feature in MATLAB, Pso algorithm based on piecewise linear weights, including the AHP, factor analysis, regression analysis, cluster analysis.