I have applied Fourier Transform to the following image.
I have downloaded this image from the Internet. I re-sized (without maintaining the aspect ratio) it using MS Paint application of Win7 to make it 512x256.
Then I have used two applications to observe its Fourier Transformed appearance.
IPLab gives the following output:
ImageJ2-20160205 gives the following output:
As you can see, the first output is a 512x256 image. The second one is a 512x512 image.
Why are those outputs different?
How would they effect processing of an image?