imgFFTLowPass {biOps}R Documentation

Apply a low pass filter on a fft matrix

Description

This function returns the low passed filter on a fft matrix (this matrix should be shifted).

Usage

imgFFTLowPass(fft_matrix, r)

Arguments

fft_matrix The complex matrix of an fft transformation
r The radius of the frequency filter

Value

return an imagedata

See Also

imgFFT imgFFTInv imgFFTHighPass imgFFTBandPass imgFFTBandStop

Examples

        ## Not run: 
                x <- readJpeg(system.file("samples", "violet.jpg", package="biOps"))
                t <- imgFFT(x, FALSE)
                i <- imgFFTLowPass(t, 25)
        
## End(Not run)

[Package biOps version 0.2.1 Index]