FFT

List of Operators

convol_fftConvolFftconvol_fftConvolFftconvol_fft

Multiply an image with a filter image in the frequency domain.

convol_gaborConvolGaborconvol_gaborConvolGaborconvol_gabor

Convolve an image with a Gabor filter in the frequency domain.

correlation_fftCorrelationFftcorrelation_fftCorrelationFftcorrelation_fft

Multiply one image with the complex conjugate of another image in the frequency domain.

deserialize_fft_optimization_dataDeserializeFftOptimizationDatadeserialize_fft_optimization_dataDeserializeFftOptimizationDatadeserialize_fft_optimization_data

Deserialize FFT speed optimization data.

energy_gaborEnergyGaborenergy_gaborEnergyGaborenergy_gabor

Calculate the energy of a two-channel image.

fft_genericFftGenericfft_genericFftGenericfft_generic

Compute the fast Fourier transform of an image.

fft_imageFftImagefft_imageFftImagefft_image

Compute the fast Fourier transform of an image.

fft_image_invFftImageInvfft_image_invFftImageInvfft_image_inv

Compute the inverse fast Fourier transform of an image.

gen_bandfilterGenBandfiltergen_bandfilterGenBandfiltergen_bandfilter

Generate an ideal band filter.

gen_bandpassGenBandpassgen_bandpassGenBandpassgen_bandpass

Generate an ideal bandpass filter.

gen_derivative_filterGenDerivativeFiltergen_derivative_filterGenDerivativeFiltergen_derivative_filter

Generate a derivative filter in the frequency domain.

gen_filter_maskGenFilterMaskgen_filter_maskGenFilterMaskgen_filter_mask

Store a filter mask in the spatial domain as a real-image.

gen_gaborGenGaborgen_gaborGenGaborgen_gabor

Generate a Gabor filter.

gen_gauss_filterGenGaussFiltergen_gauss_filterGenGaussFiltergen_gauss_filter

Generate a Gaussian filter in the frequency domain.

gen_highpassGenHighpassgen_highpassGenHighpassgen_highpass

Generate an ideal highpass filter.

gen_lowpassGenLowpassgen_lowpassGenLowpassgen_lowpass

Generate an ideal lowpass filter.

gen_mean_filterGenMeanFiltergen_mean_filterGenMeanFiltergen_mean_filter

Generate a mean filter in the frequency domain.

gen_sin_bandpassGenSinBandpassgen_sin_bandpassGenSinBandpassgen_sin_bandpass

Generate a bandpass filter with sinusoidal shape.

gen_std_bandpassGenStdBandpassgen_std_bandpassGenStdBandpassgen_std_bandpass

Generate a bandpass filter with Gaussian or sinusoidal shape.

optimize_fft_speedOptimizeFftSpeedoptimize_fft_speedOptimizeFftSpeedoptimize_fft_speed

Optimize the runtime of the FFT.

optimize_rft_speedOptimizeRftSpeedoptimize_rft_speedOptimizeRftSpeedoptimize_rft_speed

Optimize the runtime of the real-valued FFT.

phase_correlation_fftPhaseCorrelationFftphase_correlation_fftPhaseCorrelationFftphase_correlation_fft

Compute the phase correlation of two images in the frequency domain.

phase_degPhaseDegphase_degPhaseDegphase_deg

Return the phase of a complex image in degrees.

phase_radPhaseRadphase_radPhaseRadphase_rad

Return the phase of a complex image in radians.

power_bytePowerBytepower_bytePowerBytepower_byte

Return the power spectrum of a complex image.

power_lnPowerLnpower_lnPowerLnpower_ln

Return the power spectrum of a complex image.

power_realPowerRealpower_realPowerRealpower_real

Return the power spectrum of a complex image.

read_fft_optimization_dataReadFftOptimizationDataread_fft_optimization_dataReadFftOptimizationDataread_fft_optimization_data

Load FFT speed optimization data from a file.

rft_genericRftGenericrft_genericRftGenericrft_generic

Compute the real-valued fast Fourier transform of an image.

serialize_fft_optimization_dataSerializeFftOptimizationDataserialize_fft_optimization_dataSerializeFftOptimizationDataserialize_fft_optimization_data

Serialize FFT speed optimization data.

write_fft_optimization_dataWriteFftOptimizationDatawrite_fft_optimization_dataWriteFftOptimizationDatawrite_fft_optimization_data

Store FFT speed optimization data in a file.