Fast Fourier Transform: FFT.

 

function call:

[out_img1r, out_img1i]=vsg('FFT',in_img1);

 

Arguments:

in_img1 input image, 3 channel RGB, 1 channel greyscale or binary image.

 

Description:

out_img1r – the output image values are the real FFT coefficients of the input image.

out_img1i – the output image values are the imaginary FFT coefficients of the input image.

 

Example:

img = openimage('baboon.jpg');

h=figure;image(img);set(h,'Name','Input Image');

[out_img1,out_img2]=vsg('FFT',img);

 

Notes:

1. For DICOM images, the function operates on only the first slice, this will be updated.

2. For RGB images, the function operates on all colour planes separately.