fft_image_invfft_image_invFftImageInvFftImageInv (Operator)

Name

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

Signature

fft_image_inv(Image : ImageFFTInv : : )

fft_image_invfft_image_invFftImageInvFftImageInvFftImageInv 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 transformation is always performed for the entire image, i.e., the domain of the image is ignored.

Execution Information

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 channel level.
Automatically parallelized on internal data level.

Parameters

ImageImageImageImageimage (input_object) (multichannel-)image(-array) → object (complex)

Input image.

ImageFFTInvImageFFTInvImageFFTInvImageFFTInvimageFFTInv (output_object) image(-array) → object (byte)

Inverse-Fourier-transformed image.

Result

fft_image_invfft_image_invFftImageInvFftImageInvFftImageInv 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>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>). If necessary, an exception is raised.

Possible Predecessors

convol_fftconvol_fftConvolFftConvolFftConvolFft, convol_gaborconvol_gaborConvolGaborConvolGaborConvolGabor, fft_imagefft_imageFftImageFftImageFftImage, optimize_fft_speedoptimize_fft_speedOptimizeFftSpeedOptimizeFftSpeedOptimizeFftSpeed, read_fft_optimization_dataread_fft_optimization_dataReadFftOptimizationDataReadFftOptimizationDataReadFftOptimizationData

Possible Successors

convert_image_typeconvert_image_typeConvertImageTypeConvertImageTypeConvertImageType, energy_gaborenergy_gaborEnergyGaborEnergyGaborEnergyGabor

Alternatives

fft_genericfft_genericFftGenericFftGenericFftGeneric, rft_genericrft_genericRftGenericRftGenericRftGeneric

Module

Foundation

Operators