fftw {rimage}R Documentation

Apply FFT to 2-Dimensional Data

Description

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

Usage

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


[Package rimage version 0.5-7 Index]