对原始图像在水平方向和垂直方向与2个滤波器(低通、高通)相卷积，可以得到4块面积为原图像1/4的子图，分别为水平方向低频和垂直方向低频(HH)、水平方向低频和垂直方向高频(HG)、水平方向高频和垂直方向低频(GH)、水平方向高频和垂直方向高频(GG)。-The original image in the horizontal direction and vertical direction and two filters (low pass, high pass) with convolutio

使用梯度下降方法基于MATLAB的大小根据区域预测的价格的房子-Using gradient descent method based on MATLAB according to the size of the area for prediction of the price of the house

wolf calculated Lyapunov exponent, Space target recognition algorithm using PM, Automatic identification in the matlab environment the size of the connected area.