读取dat数据 经过傅里叶变换显示二维图像 然后进行三维显示 显示结果可以保存为avi格式 使用中安装了fftw vtk 以及opencv-Showing results can be saved as avi format to use to install fftw VTK and opencv read the dat data after Fourier transform two-dimensional image is displayed and three-dimensional