Introduction - If you have any usage issues, please Google them yourself
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.