FFT

List of Operators

convol_fftConvolFftConvolFftconvol_fft
Convolve an image with a filter in the frequency domain.
convol_gaborConvolGaborConvolGaborconvol_gabor
Convolve an image with a Gabor filter in the frequency domain.
correlation_fftCorrelationFftCorrelationFftcorrelation_fft
Compute the correlation of two images in the frequency domain.
deserialize_fft_optimization_dataDeserializeFftOptimizationDataDeserializeFftOptimizationDatadeserialize_fft_optimization_data
Deserialize FFT speed optimization data.
energy_gaborEnergyGaborEnergyGaborenergy_gabor
Calculate the energy of a two-channel image.
fft_genericFftGenericFftGenericfft_generic
Compute the fast Fourier transform of an image.
fft_imageFftImageFftImagefft_image
Compute the fast Fourier transform of an image.
fft_image_invFftImageInvFftImageInvfft_image_inv
Compute the inverse fast Fourier transform of an image.
gen_bandfilterGenBandfilterGenBandfiltergen_bandfilter
Generate an ideal band filter.
gen_bandpassGenBandpassGenBandpassgen_bandpass
Generate an ideal bandpass filter.
gen_derivative_filterGenDerivativeFilterGenDerivativeFiltergen_derivative_filter
Generate a derivative filter in the frequency domain.
gen_filter_maskGenFilterMaskGenFilterMaskgen_filter_mask
Store a filter mask in the spatial domain as a real-image.
gen_gaborGenGaborGenGaborgen_gabor
Generate a Gabor filter.
gen_gauss_filterGenGaussFilterGenGaussFiltergen_gauss_filter
Generate a Gaussian filter in the frequency domain.
gen_highpassGenHighpassGenHighpassgen_highpass
Generate an ideal highpass filter.
gen_lowpassGenLowpassGenLowpassgen_lowpass
Generate an ideal lowpass filter.
gen_mean_filterGenMeanFilterGenMeanFiltergen_mean_filter
Generate a mean filter in the frequency domain.
gen_sin_bandpassGenSinBandpassGenSinBandpassgen_sin_bandpass
Generate a bandpass filter with sinusoidal shape.
gen_std_bandpassGenStdBandpassGenStdBandpassgen_std_bandpass
Generate a bandpass filter with Gaussian or sinusoidal shape.
optimize_fft_speedOptimizeFftSpeedOptimizeFftSpeedoptimize_fft_speed
Optimize the runtime of the FFT.
optimize_rft_speedOptimizeRftSpeedOptimizeRftSpeedoptimize_rft_speed
Optimize the runtime of the real-valued FFT.
phase_correlation_fftPhaseCorrelationFftPhaseCorrelationFftphase_correlation_fft
Compute the phase correlation of two images in the frequency domain.
phase_degPhaseDegPhaseDegphase_deg
Return the phase of a complex image in degrees.
phase_radPhaseRadPhaseRadphase_rad
Return the phase of a complex image in radians.
power_bytePowerBytePowerBytepower_byte
Return the power spectrum of a complex image.
power_lnPowerLnPowerLnpower_ln
Return the power spectrum of a complex image.
power_realPowerRealPowerRealpower_real
Return the power spectrum of a complex image.
read_fft_optimization_dataReadFftOptimizationDataReadFftOptimizationDataread_fft_optimization_data
Load FFT speed optimization data from a file.
rft_genericRftGenericRftGenericrft_generic
Compute the real-valued fast Fourier transform of an image.
serialize_fft_optimization_dataSerializeFftOptimizationDataSerializeFftOptimizationDataserialize_fft_optimization_data
Serialize FFT speed optimization data.
write_fft_optimization_dataWriteFftOptimizationDataWriteFftOptimizationDatawrite_fft_optimization_data
Store FFT speed optimization data in a file.