etspy.align.tilt_maximage(stack: TomoStack, limit: float = 10, delta: float = 0.1, plot_results: bool = False, also_shift: bool = False, shift_limit: float = 20) → TomoStack[source]

Perform automated determination of the tilt axis of a TomoStack.

The projected maximum image used to determine the tilt axis by a combination of Sobel filtering and Hough transform analysis.

Parameters:
stack: TomoStack

TomoStack array containing the tilt series data

limit: float = 10

Maximum rotation angle to use for calculation

delta: float = 0.1

Angular increment for calculation

plot_results: bool = False

If True, plot the maximum image along with the lines determined by Hough analysis

also_shift: bool = False

If True, also calculate and apply the global shift perpendicular to the tilt by minimizing the sum of the reconstruction

shift_limit: float = 20

The limit of shifts applied if also_shift is set to True

Returns:

rotated – Rotated version of the input stack

Return type:

TomoStack