convolution in frequency domain convolution in spatial domain == multiplication in frequency domain. FFT Fast Fourier Transform smoothing and blur low and high pass filter properties of Fourier Transform Fourier pair 相关文章: 2021-04-27 2021-09-13 2021-09-28 2021-05-16 2022-12-23 2021-09-25 2021-07-15 2021-12-29