fft_image_invfft_image_invfft_image_invFftImageInvFftImageInv (Operator)

Name

fft_image_invfft_image_invfft_image_invFftImageInvFftImageInv — Compute the inverse fast Fourier transform of an image.

Signature

Description

fft_image_invfft_image_invfft_image_invFftImageInvFftImageInv calculates the inverse Fourier transform of the input image (ImageImageImageImageimage), i.e., it transforms the image back into the spatial domain. This corresponds to the call

fft_generic(Image,ImageFFT,'from_freq',1,'sqrt','dc_center','byte')

.

Attention

The filtering is always done on the entire image, i.e., the region of the image is ignored.

Parallelization

• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Automatically parallelized on tuple level.
• Automatically parallelized on internal data level.

Parameters

Result

fft_image_invfft_image_invfft_image_invFftImageInvFftImageInv returns 2 (H_MSG_TRUE) if the input image is of correct type. If the input is empty the behavior can be set via set_system(::'no_object_result',<Result>:)set_system("no_object_result",<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>). If necessary, an exception is raised.

Possible Predecessors

convol_fftconvol_fftconvol_fftConvolFftConvolFft, convol_gaborconvol_gaborconvol_gaborConvolGaborConvolGabor, fft_imagefft_imagefft_imageFftImageFftImage, optimize_fft_speedoptimize_fft_speedoptimize_fft_speedOptimizeFftSpeedOptimizeFftSpeed, read_fft_optimization_dataread_fft_optimization_dataread_fft_optimization_dataReadFftOptimizationDataReadFftOptimizationData

Possible Successors

convert_image_typeconvert_image_typeconvert_image_typeConvertImageTypeConvertImageType, energy_gaborenergy_gaborenergy_gaborEnergyGaborEnergyGabor

Alternatives

fft_genericfft_genericfft_genericFftGenericFftGeneric, rft_genericrft_genericrft_genericRftGenericRftGeneric

See also

fft_imagefft_imagefft_imageFftImageFftImage, fft_genericfft_genericfft_genericFftGenericFftGeneric, energy_gaborenergy_gaborenergy_gaborEnergyGaborEnergyGabor

Module

Foundation