Fourier transform--based convolution filter
#include "dip_linear.h"
dip_Error dip_ConvolveFT ( in, psf, out, inrep, psfrep, outrep )
binary, integer, float, complex
This function convolves the in image with the point spread function psf, by multiplying their Fourier transforms. The inrep, psfrep and outrep specify whether the images are spatial images (DIP_IMAGE_REPRESENTATION_SPATIAL) or their Fourier transform. (DIP_IMAGE_REPRESENTATION_SPECTRAL).
out is cast to a real type if and only if both in and psf are real and in the spatial domain. That is, no effort is made to check for evenness of images in the Fourier domain, nor to check the values of the imaginary component of the result. To convert the output to a real-valued type, use the function ConvertDataType.
| Data type | Name | Description |
| dip_Image | in | Input image |
| dip_Image | psf | Psf image |
| dip_Image | out | Output image |
| dipf_ImageRepresentation | inrep | Input spatial or spectral |
| dipf_ImageRepresentation | psfrep | PSF spatial or spectral |
| dipf_ImageRepresentation | outrep | Output spatial or spectral |