本实验要求要求实现高斯低通滤波器的程序，并设定截至频率半径为15时得到如课本上图4.18图c的图。使低频通过而使高频衰减的滤波器成为低通滤波器，被低通滤波的图像比原始图像少一些尖锐的细节部分。本实验就是设计实现高斯低通滤波器。-Requirements of this experiment requires low-pass Gaussian filter procedure and set the frequency up to a radius of 15 textbooks, such as when the map of Figure c Figure 4.18. So that the adoption of high-frequency low-frequency attenuation of the filter as a low-pass filter, low pass filter by the image less than the original sharp image details. The realization of this experiment is to design low-pass Gaussian filter.