helical prerate weights double

This widget is used to call nabu prepare-weights-double function. It will define weights map and double flat field.

Options

The goal of this widget is to compute weights map and double flat field from user settings.

Then the output can be provide to nabu to compute a slice / volume using the ‘helical’ and ‘FBP’ method.

The options you can modify are:

• output_file: location of the result containing the double flat field and the weights map. By default it will store the result near the .nx file under the name ‘map_and_doubleff.hdf5’

• transition width: used to determine how the weights are apodised near the upper and lower border

  For example for frames which are 2048x544 for a transition width of 50 the result will look like:

  

  And for the same but with a transition width of 200 the result will look like: