请教下gen_gauss_filter算子，为什么sigma越大，得到的图像亮的区域越小，sigma越小，得到的图像亮的区域...
gen_gauss_filter (算子名称) 名称gen_gauss_filter— Generate a Gaussian filter in the frequency domain.参数签名gen_gauss_filter( : ImageGauss : Sigma1, Sigma2, Phi, Norm, Mode, Width, Height : )描述gen_gauss_filter generates a (possibly anisotropic) Gaussian filter in the frequency domain....