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.