scipy.ndimage.fourier.fourier_gaussian

scipy.ndimage.fourier.fourier_gaussian(input, sigma, n=-1, axis=-1, output=None)

Multi-dimensional Gaussian fourier filter.

The array is multiplied with the fourier transform of a Gaussian kernel.

Parameters:

input : array_like

The input array.

sigma : float or sequence

The sigma of the Gaussian kernel. If a float, sigma is the same for all axes. If a sequence, sigma has to contain one value for each axis.

n : int, optional

If n is negative (default), then the input is assumed to be the result of a complex fft. If n is larger than or equal to zero, the input is assumed to be the result of a real fft, and n gives the length of the array before transformation along the real transform direction.

axis : int, optional

The axis of the real transform.

output : ndarray, optional

If given, the result of filtering the input is placed in this array. None is returned in this case.

Returns:

fourier_gaussian : ndarray or None

The filtered input. If output is given as a parameter, None is returned.