RavenFilter

Summary

RavenFilter

Process category

Brief description

Computational demand

for typical tomography data

(low, medium, high)

Comment(s)

Reference(s)

Common alternative process(es)

filter

To suppress ring artefacts.

Medium

Operates on sinograms.
Over-aggressive application can lead to new artefacts.

Numerical removal of ring artifacts in microtomography

RingRemovalWaveletfft
CcpiRingArtefactFilter

Parameters

Brief description

Savu Configurator command

>>> disp -avv

-------------------------------------------------------------------------------------
 1) RavenFilter(savu.plugins.ring_removal.raven_filter)                              
  A plugin to remove ring artefacts                                                  
    1)                 uvalue : 20
    To define the shape of filter, e.g. bad=10, moderate=20, minor=50.
    2)            in_datasets : []
    Create a list of the dataset(s) to process.
    3)                 nvalue : 4
    To define the shape of filter.
    4)           out_datasets : []
    Create a list of the dataset(s) to create.
    5)                 vvalue : 2
    How many rows to be applied the filter.
    6)                  padFT : 20
    Padding for Fourier transform.
-------------------------------------------------------------------------------------

>>>

Additional notes

For basic information on this process, please use the disp -av (or disp -avv or disp -v[v] <process index>) command in Savu Configurator (see above). The table below is intended to provide some additional notes on a number of selected topics:

Item	Parameter name	Parameter format	Example(s)		Comment(s)
Item	Parameter name	Parameter format	Parameter value	Effect	Comment(s)
1	uvalue		10	To suppress prominent ring artefacts.
			20	To suppress moderate ring artefacts.
			50	To suppress minor ring artefacts.
2	in_datasets
3	nvalue
4	out_datasets
5	vvalue
6	padFT

Usage

TBC.

Tomography Reconstruction

RavenFilter

Analytics

Summary

Parameters

Brief description

Additional notes

Usage

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