FastFTReconstructor

class FTR.ftr.FastFTReconstructor(ap, filter=None, manage_tt=None, suppress_tt=False)

Bases: FTR.libftr._ftr.CFTRBase, FTR.ftr.FourierTransformReconstructor

A fourier transform reconstructor which implements the reconstruct method using libFTR: C implementation of FTR.

Parameters:

ap: array_like

The aperture of valid measurement points, which also defines the reconstructor shape used to generate filters.

filter: string_like, optional

The filter name to use. If not provided, it is expected that the user will initialize gx and gy themselves.

manage_tt: bool, optional

Remove tip and tilt from slopes before reconstruction, and re-apply them after reconstruction. (default is to use suppress_tt)

suppress_tt: bool, optional

Remove tip and tilt from slopes, and don’t re-apply after reconstruction. (default is False)

See also

FourierTransformReconstructor

Notes

The Fourier transforms used in this reconstructor are handled by FFTW <http://fftw.org>, the Fastest Fourier Transform in the West. FFTW gains much of its speed by operating in-place, and performing as many optimization tricks as it knows how. When benchmarked against the pure-python implementaion above, this implementation should be almost an order of magnitude faster.

Methods Summary

reconstruct(xs, ys)

Reconstruct slopes to phase.

Methods Documentation

reconstruct(xs, ys)

Reconstruct slopes to phase.

Parameters:

xs : array_like

The x slopes

ys : array_like

The y slopes

Returns:

estimate : array_like

An estimate of the phase from the slopes.