skimage2.transform.order_angles_golden_ratio#

skimage2.transform.order_angles_golden_ratio(theta)[source]#

Order angles to reduce the amount of correlated information in subsequent projections.

Parameters:

thetandarray of dtype float and shape (M,): Projection angles in degrees. Duplicate angles are not allowed.

Yields:

indicesnp.intp: Indices into theta such that theta[indices] gives the approximate golden ratio ordering of the projections. In total, len(theta) indices are yielded. All non-negative integers < len(theta) are yielded exactly once.

Notes

The method used here is that of the golden ratio introduced by T. Kohler.

References

[1]

Kohler, T. “A projection access scheme for iterative reconstruction based on the golden section.” Nuclear Science Symposium Conference Record, 2004 IEEE. Vol. 6. IEEE, 2004.

[2]

Winkelmann, Stefanie, et al. “An optimal radial profile order based on the Golden Ratio for time-resolved MRI.” Medical Imaging, IEEE Transactions on 26.1 (2007): 68-76.