fft_filter#

kikuchipy.pattern.fft_filter(pattern: ndarray, transfer_function: ndarray | Window, apodization_window: 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:
filtered_pattern

Filtered EBSD pattern.