Hi Martin,
>I am getting warped myself.
>:)
>So, if my field map and image are both in distorted/undistorted space and I
>want to unwarp/warp the image to undistorted/distorted space, the Fourier
>shift is my friend. But if the field map and image are in opposite spaces, I
>can use pixel shift. Do I have it right?
>
>
Not quite.
I use a Fourier method to go from undistorted to distorted space.
I use a pixel shift method to go from distorted to undistorted space.
I could have implemented pixel shift for both, or Fourier for both,
but these were the options I chose for fugue. In future versions I
will probably use pixel shift for both and get rid of Fourier. For
now, however, Fourier is used for getting distorted images from
undistorted ones (the forward warp option).
All the best,
Mark
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