Find optimal centre of rotations

[lauraporta]

Is your feature request related to a problem? Please describe.
The centre of rotation is not aligned with the centre of the image. It becomes very clear when doing np.max(original_video, axis=0)

Describe the solution you'd like
I want a method to be added in the pipeline that finds this centre.

Describe alternatives you've considered
I think there are two options:
A) Fit an ellipse to the image:
- take the max projection (np.max())
- set a threshold and get binary image
- fit ellipse (with scikit-image)
B) Use the two most bright cells, find their contours, and use geometry

[lauraporta]

Nice progress on this problem was done by @DhimanS07 in it's project