imgFFTBandPass {biOps} | R Documentation |
This function returns the band passed filter on a fft matrix (this matrix should be shifted).
imgFFTBandPass(fft_matrix, r1, r2)
fft_matrix |
The complex matrix of an fft transformation |
r1 |
The inner radius of the frequency filter |
r2 |
The outer radius of the frequency filter |
return an imagedata
imgFFT
imgFFTInv
imgFFTLowPass
imgFFTHighPass
imgFFTBandStop
## Not run: x <- readJpeg(system.file("samples", "violet.jpg", package="biOps")) t <- imgFFT(x, FALSE) i <- imgFFTBandPass(t, 25, 70) ## End(Not run)