fft_image_invfft_image_invFftImageInvFftImageInv (Operator)
Name
fft_image_invfft_image_invFftImageInvFftImageInv — Compute the inverse fast Fourier transform of an image.
Signature
Description
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) → objectHImageHImageHobject (complex)
Input image.
ImageFFTInvImageFFTInvImageFFTInvImageFFTInvimageFFTInv (output_object) image(-array) → objectHImageHImageHobject * (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
See also
fft_imagefft_imageFftImageFftImageFftImage,
fft_genericfft_genericFftGenericFftGenericFftGeneric,
energy_gaborenergy_gaborEnergyGaborEnergyGaborEnergyGabor
Module
Foundation