Im working with periodic patterns in image space. When we see them in fourier space, I see a cross-like spectrum that gets rotated by the same angle as the specturm in image space.
Image space image, rotated by about 45°

Fourier space, rotated by the same ammount

My question is: What method can I use in order to find this angle in an enfficient way?

Ive tried using a fixed threshold and then a fit-line method but the other frequencies in the image throw my angle calculation off.

Thanks for the help!