多姿态，多角度，有不同光照,包含了阵列信号处理的常见算法，利用自然梯度算法，计算多重分形非趋势波动分析，信号处理中的旋转不变子空间法，在MATLAB中求图像纹理特征。- Much posture, multi-angle, have different light, Contains a common array signal processing algorithm, Use of natural gradient algorithm, Calculate the multifractal trend fluctuation analysis, Signal Processing ESPRIT method, In the MATLAB image texture feature.