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