fftw: Apply FFT to 2-Dimensional Data

Description Usage Arguments Value References See Also

View source: R/fft_filter.R

Description

This function applies FFT to 2-dimensional data (i.e. image) using fftw library.

Usage

1
fftw(img, dir = -1, debug=FALSE)

Arguments

img

target image

dir

set -1 for normal transformation and 1 for inverse transformation

debug

set TRUE if you want to output debug message

Value

a matrix of complex number

References

FFTW (Fastest Fourier Transform in the West) http://www.fftw.org

See Also

fftw


ripa documentation built on May 29, 2017, 5:39 p.m.

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