详细画出了时域和频域的相关图，研究生时的现代信号处理的作业，在MATLAB中求图像纹理特征，使用起来非常方便，包括最小二乘法、SVM、神经网络、1_k近邻法,应用小区域方差对比，程序简单，有PMUSIC 校正前和校正后的比较。-Correlation diagram shown in detail the time domain and frequency domain, Modern signal processing jobs when the graduate, In the MATLAB image texture feature, Very convenient to use, Including the least squares method, the SVM, neural networks, 1 _k neighbor method, Application of small area variance comparison, simple procedures, A relatively before correction and after correction PMUSIC.