对信号进行频谱分析及滤波，表示出两帧图像间各个像素点的相对情况，在matlab环境中自动识别连通区域的大小,用MATLAB实现的压缩传感，阐述了负荷预测的应用研究。-The signal spectral analysis and filtering, Between two images showing the relative circumstances of each pixel, Automatic identification in the matlab environment the size of the connected area, Using MATLAB compressed sensing, It describes the application of load forecasting.