DFT and Zoom
Excuse me for asking help so quickly, and excuse me for my english too, because I am french and it is quite hard to speak a good english.
So, I have got a problem with DFT...
Here is a schema of my DFTChain:
source image : img
split the result in 4 parts
get the corners to put them in a bigger image (4 times biggest), taking each corner and put on them a border with Border operator
add these images to obtain only one
the result is a big image, with in corners each respective part of the dft(img) and some 0 between these parts
And, when I try to invert DFT (idft) of the result image, I don't work: I can't access to pixel values nor to "filestore" it on harddrive.
I tried to do it with "magnitude" and "phase" separatly, but it doesn't work too...
Please, can someone help me?