IIRFilter

class eyefeatures.preprocessing.smoothing.IIRFilter(x, y, t=None, pk=None, N=7, Wn=0.5, **iir_kw)[source]

Bases: BaseSmoothingPreprocessor

IIR filter. Convolution with IIR kernel along ‘x’ and ‘y’. kwargs are passed to scipy.signal.iirfilter to determine the kernel.

Parameters:

mode – parameter of scipy.signal.fftconvolve.
x (str)
y (str)
t (str)
pk (list[str])
N (int)
Wn (int | tuple[int, int])

Notes

Default values are taken from https://arxiv.org/pdf/2303.02134.

Algorithm

Similar to FIR filter but with two convolution signals instead of one.