center#

class Center(Import)[source]#

Bases: object

Class for creating a tab to help find the center of rotation. See examples for more information on center finding.

Attributes

ImportImport: Needs an import object to be constructed.
current_centerdouble: Current center of rotation. Updated when center_textbox is updated.
center_guessdouble: Guess value for center of rotation for automatic alignment (find_center).
index_to_tryint: Index to try out when automatically (entropy) or manually trying to find the center of rotation.
search_stepdouble: Step size between centers (see tomopy.recon.rotation.write_center or tomopyui.backend.util.center).
search_rangedouble: Will search from [center_guess - search_range] to [center_guess + search range] in steps of search_step.
num_iterint: Number of iterations to use in center reconstruction.
algorithmstr: Algorithm to use in the reconstruction. Chosen from dropdown list.
filterstr: Filter to be used. Only works with fbp and gridrec. If you choose another algorith, this will be ignored.

find_center_manual_on_click(*args)[source]#: Reconstructs at various centers when you click the button, and plots the results with a slider so one can view. TODO: see X example. Uses search_range, search_step, center_guess. Creates a hyperslicer + histogram plot

find_center_on_click(*args)[source]#: Callback to button for attempting to find center automatically using tomopy.recon.rotation.find_center. Takes index_to_try and center_guess. This method has worked better for me, if I use a good index_to_try and center_guess.

find_center_vo_on_click(*args)[source]#: Callback to button for attempting to find center automatically using tomopy.recon.rotation.find_center_vo. Note: this method has not worked well for me.