fft_filter#

kikuchipy.pattern.fft_filter(pattern: ndarray, transfer_function: Union[ndarray, Window], apodization_window: Union[None, ndarray, Window] = None, shift: bool = False) → ndarray[source]#

Filter an EBSD patterns in the frequency domain.

Parameters:

pattern: EBSD pattern.
transfer_function: Filter transfer function in the frequency domain.
apodization_window: An apodization window to apply before the FFT in order to suppress streaks.
shift: Whether to shift the zero-frequency component to the centre of the spectrum. Default is False.

Returns: